PLASTIC SAFETY CASE FOR A GOLD COIN, PRECIOUS STONE, PEARL OR THE LIKE, ENSURING AUTHENTICITY AND UNAFFECTED QUALITY OF COINAGE OR PREPARATION OF THE PIECE

Abstract: In a case of plastic material for a single marketable valuable piece as a coin, a medal, a precious stone, a pearl, a stamp or alia, made of two elements superimposed, one of which at least transparent and formed with a shell to lodge said piece, and connected at least all along their edges, the invention lies substantially in the fact that, between the upper and lower elements 1,1′ and 2,2′, which are shaped as credit cards and enclose the piece 4,4′ with certification data, provision is made, in order to benefit of an absolute seal not only against counterfeiting but also against forced opening, of a delaminable security printing pattern in the form of a hologram 5 or of a multi-ink layer 5′, which is anchored in a discontinuous way and gets visibly and irreparably lacerated as soon as an opening attempt is effected on the case.

Description: The present invention concerns a safety case for coins, medals, ingots and the like of precious metals, as well as precious stones, pearls or stamps of philatelic value, and more precisely it relates to a case with a protection device suitable to certify the authenticity of the enclosed piece. Coins, medals and the like struck of gold, silver and platinum have always been purchased by collectors, especially when the quotation of the relative metal is increasing, to be kept in private collections, with the possibility for said coins and medals to be subsequently put on sale when their quotation affords an appreciable profit. The same applies to the trade of ingots, generally of gold, but also of platinum, of precious stones, pearls and to the trade of stamps possessing a philatelic value. Practically most of these transactions are troublesome, because it is necessary to check preliminarily the existence, for each single piece, of the characteristics, e.g. numismatic or philatelic, indicated not only by the seller but also resulting from the legend on the coin, medal, ingot or the like, or on the stamp. These characteristics are for instance metallic composition and content, size, dating, weight, face value, grading as well as the denomination of the coin, medal, ingot and the like. For coins one has to check, inter alia, that the piece of precious metal has not lost in a considerable extent the mint bloom, which is peculiar of a freshly struck or anyhow prepared piece. It occurs that, according to subjective standards, the absence of scratches, bag marks and the like, or of other disqualifying marks of wear from circulation, is to be ascertained on the obverse and reverse of each piece. Obviously for all pieces a high quality is guaranteed at the time of issue by the mint or preparing body, or at least by the dealer, as the first seller to the public, which is usually a bank or a numismatic association. However, with the successive circulation, such a guarantee of authenticity and mint state is obviously lost, on one side because circulation offers the opportunity to unreliable people to spread conterfeits or pieces possessing less valuable features than those indicated in the legend, and on the other side because most pieces, even if made of the original material, already show aesthetic faults from wear and handling, as induced by the circulation. The need for accurate, although subjective, preliminary inspections on each piece produces therefore a slow down in transactions, which cannot be effected in real time with the price variations, and sometimes operators are discouraged from acting on the fluctuating market because of the too long controls occurring after the offer. Untill now a single coin, medal, ingot or the like of precious metal as gold, silver and platinum was usually contained in a cover of plastic sheet, formed by two superimposed elements, at least one of which was transparent to show the interposed piece, bonded along their edges so as to enclose it since its coinage or preparation or at least from its first sale to the public. Even if the cover containing the coin, medal or ingot was applied since the coinage or preparation or first sale to the public, it could not represent a guarantee as to the origin and authenticity of the piece, because the latter could have been easily replaced in the cover for the absence of a valid seal or of security elements, and because the cover could be opened in a non-destructive manner, with an always possible substitution of the original piece therein contained. To such a cover, also if properly sealed, a suspicion was inevitably connected that a forced opening already occurred, with the consequent necessity of re-opening the same for a direct control of the piece prior to its purchase. U.S. patent N. 4.592.465 discloses a coin display case including an outer plastic lens, an inner plastic lens and a central laminate, which is joined to said lens and has a hole for accepting the coin. Apart from the fact that said central laminate involves an inconvenient increase of the thickness on the whole extension of said coin display case, no provision is contemplated for preventing any illicit substitution of the enclosed coin. The above hindrances suggest as desirable for valuable pieces a safety case that may be provided with a seal, suitable to reveal in an immediate, unavoidable and permanent way any effected opening or opening attempt, made on any point of the case, so that since the time of issue the guarantee of origin by the body effecting coinage or preparation, or at least by the first dealer, as well as the original mint state or quality of preparation, may be permanently ensured for each piece that circulates in such an intact case. According to the invention, the case comprising two superimposed elements bonded together, made of plastic material, generally in sheet and transparent, is characterized in that at least one of said elements, preferably the upper one, is provided with at least one housing in the form of a shell for a single piece and the other element, that is the lower one, possibly flat, features, also by transparency, an indelible graphic pattern consisting in images and data for the identification and the certification of the piece and in that, between the two superimposed elements enclosing the piece, provision is made, in order to benefit of an absolute seal not only against counterfeiting but also against forced opening, of an imprinted decorative layer which represents a security printing pattern, which is joined to its support in a manner choosen as a loosely bonding to an interposed specific support or a direct anchoring in a discontinuous way and which is therefore delaminable, with a visible irreparable laceration of the security printing pattern occurring as soon as an opening attempt is effected on the case, said imprinted decorative layer, with an appropriate printing blank around the piece, being connected to the two elements also all along their respective edges, thus forming, because of the anchoring and/or bonding effect, a permanent unit with them. Practically, the seal against counterfeiting in the form of a security printing pattern is made of a holographic micro-embossed metalization coating, which is loosely bonded to a specific support constituted by a sheet of plastic material and is therefore delaminable; the coating with the support is bonded by means of an adhesive to both elements of the case and gets delaminated, with visible irreparable laceration of the security printing pattern upon the pulling action of the overlying adhesive as soon as an opening attempt is effected on the case. Alternatively, the seal against counterfeiting in the form of a security printing pattern is a decorative multi-ink layer, which is anchored on only some portions to its substrate due to a previous coating with a transfer primer on the remaining portions and is consequently delaminable. This layer is bonded to the other element by means of an adhesive, so that it gets delaminated, with a visible irreparable laceration of the security printing pattern upon the pulling action of the overlying adhesive as soon as an opening attempt is effected on the case. The security printing pattern features a figure, a sign, a writing, a letter, a number or the like and may also result by the combination of said symbols or by their succession in any sense. In general, the two elements forming the case are transparent. However, it is not excluded that one of the elements may be opaque, above all in relation to the nature of the piece contained in the case, for instance a stamp, in which only one face shows the characterizing features. The transparent lower element has a graphic pattern analogous to that of conventional credit cards and may have a shape equal to that of said cards. Also the upper element may have a shape equal to that of the credit cards. The upper element can be thermo formed from a plastic sheet so that the housing consists of a thermo formed relief. The same result can be obtained by blistering under vacuum the element superimposed to the lower element in presence of the piece. The lower element can be constituted by any transparent plastic material suitable for this purpose. It proves to be particularly convenient to choose a plastic material belonging to the group comprising polyvinyl chloride, polystyrene, polyester, polycarbonate, polypropylene, polyethylene. The lower element may have the shape of a small tray, namely with a peripheral rim, and the housing for the piece is then not in relief, since it is obtained as a niche in the bottom wall of the small tray. The upper element, which may be flat, is contained within the rim of the tray and of course it closes also the housing for the piece. For the practical obtention of the tray-shaped element it is preferable to adopt the injection moulding method. The plastic material forming this tray-shaped element, which is transparent, may be selected in the group comprising polyvinyl chloride, acrylic resin, metacrylic resin and polycarbonate. Of course, the possibility of adopting another system for producing said element is not excluded. For the sake of brevity, in the present specification the term "hologram" refers to an image micro-embossed on a metalization coating by a nickel cliché, which has been formed by the depositing of said metal on a photo-resist emulsion engraved by laser light. The technique of preparation of the holograms is already known. When the delaminable decorative hologram with its support or, alternatively, the decorative multi-ink printing layer, also delaminable, is subjected to a mechanical exertion, even of small moment, as the pulling action of the adhesive, it gets delaminated, with the consequence that the image is torn into irregular segments and is therefore visibly and irreparably lacerated. The delaminable hologram, or the delaminable decorative multi-ink layer, constituting the security printing pattern, which is inserted between the elements of the case and is bonded to them by an adhesive also all along their respective edges, suffers a relevant irreparable laceration as soon as an opening attempt is effected on the case. In conclusion, the safety case, of which at the present invention, can guarantee the authenticity of the therein enclosed piece, because it is for itself counterfeit-proof, i.e. virtually not reproducible, and that it encloses said piece in an irreversible manner so long as the security printing seal is found in intact condition. The delaminable hologram, together with its support, is made adhesive by the application of a suitable adhesive matter on one or on both faces. In the alternative embodiment of the invention, based on a decorative multi-ink layer anchored in a discontinuous way to the lower element, the adhesive can be applied on the inner face of the layer to be bonded to the upper element; otherwise, the adhesive can be applied on the upper element, to which the whole must adhere. In view of the handling of these elements to close the safety case, and in order to protect the hologram, a release paper is added to the adhesive face and is removed at the moment of jointing the elements together. The adhesive used must be conveniently colourless. As a transparent adhesive it is advisable to adopt an acrylic resin based adhesive. In the present specification the term "ingot" means a piece having a weight generally not greater than 250 g and a thickness generally smaller than 1 cm, which can be contained in the safety case. For the sake of simplicity, the term "piece" includes also the precious stone, the pearl or the stamp of philatelic value and other objects, which can be contained in the case, as for instance a pharmaceutical specialty or a document, when such entities possess an intrinsic value and their original properties are advantageously certifiable. Furthermore, the expression "transfer primer" means in particular a layer of lithographic or silk-screen printing ink or varnish, which makes overlaid inks transferable and is preferably based on silicones or other components loosely anchored on the support. Finally, the term "anchored" refers to a chemical or physical union without adhesives of the coating layer to its substrate. As known, the credit card has a flat shape, namely is a rectangular quadrilateral with rounded corners, the standard size of which, on the midlines, is at present 85.7 x 54 mm approximately. Such may be the shape of the lower element and also of the upper element. The identification data of the piece, also for numismatic or philatelic purposes, may refer to the dealer in question, or bear decorative features. Also certification data with signature are reported such as legend, codes, numbers, series, as well as metallic composition and content, size, dating, weight, face value, grading, carats and so on. In part the identification and certification data are printed on said transparent lower element shaped as a credit card, and can also be thermographically printed or punched; in part they are visible as they are printed, for instance lithographically or in silk screen, on the reverse of the upper element, by virtue of the transparency spared on at least a portion of said lower element. An intermediate covering opaque coat separates the two layers of decorative imprints and data respectively visible on the two faces of the case. The upper element features by transparency on the upper face of the case a decorative design printed on the reverse of said element, for instance lithographically, even in two colours, which represents the symbol of the case itself. All this is visible by virtue of the transparency of the upper element and of the presence of the underlying covering opaque coating, printed for instance in white. As to the identification and certification data with signature it may be convenient to print them, instead than on one or on both elements directly as above indicated, on a separate strip of paper or of other material, to be incorporated in the case before closing the latter. More precisely the strip may be numbered and crease-cut, can be applied after removing the release paper to the adhesive on the reverse of the lower element, and is seen because of the transparency of said element. The safety case in the format of a credit card arouses in the public the sense of trust, security and confidence, which are correlated to the well known format and graphic pattern of the credit cards. The lower element, trimmed in the standard shape of credit cards, but not yet united to the upper element, can be marked by the dealer by means of the same punching and thermografic machines, which the dealer employs for standard credit cards. An invisible holographic optical code can be incorporated in the hologram, detectable in monochromatic laser light only. Furthermore, an optical code with an invisible ink, and yet readable by ultraviolet light and delaminable, can be applied on the case, also in combination with said holographic code. Such optical code may help in particular to increase the security level of the seal against counterfeiting. Alternatively, a transfer hologram or another security device can be applied to the case. The safety case provided with a security printing seal can be applied, at the counter, in substitution of the usual covers, to the uncirculated pieces, but it will be also largely adopted for a successive certification to be progressively applied to the whole numismatic, philatelic or anyhow precious circulating material, when the individual pieces are presented to the counters of the dealer for selling, or when the bearers request the dealer for the numismatic, philatelic or "precious" certification of their coins, medals, ingots, stones, pearls, stamps, by the application of the safety case. Collectors who are uncertain about the authenticity of one of their coins should take the precaution of having it authenticated and certified with permanent indication of its grading and fineness, and all this they will achieve by having their piece included by a dealer in the safety case. In conclusion, the case forming the object of the present invention represents a very fine security packing at reasonable cost, which inseparably combines the piece, that gets packed on the spot of transaction, to an unalterable and permanent certification of authenticity, and durably protects its integrity and quality. It is evident that by a so conceived case any possible doubt as to the authenticity and quality of the piece is eliminated, because such properties are now guaranteed in a direct and visible manner by the intact case for itself. Such properties of the safety case shall foster the trade of gold coins, medals, small ingots, pearls, stamps and the like, bought as gifts or for collection. If desired, in the safety case the housing for the piece is composed of two complementary shells respectively formed on the upper and lower elements, so as the volume and the conformation of said piece are distributed into the shells. As above indicated the lower element can be realized also in the form of a small tray with a niche to lodge the piece in its bottom wall and such element with the niche can be combined to an upper flat element: alternatively the upper element may be provided with a complementary shell. The safety case may present two or more housings, of course each containing a single piece. Particularly suitable to this purpose is a safety case in a format larger than credit cards. Each of said housings is protected by the surrounding imprinted decorative layer as a security printing seal against counterfeiting. The invention will be more clearly understood from the following description, which constitutes a non-limiting example, with reference to the attached sheet of drawings, in which: figure 1 is a top view of the case, seen from the side provided with the housing, figure 2 is a top view of the case from the opposite side, figure 3 is a section of the case taken along line I-I of figure 1, with details enlarged not in scale, figure 4 is a section, analogous to that of figure 3, of a case according to an alternative embodiment, with details enlarged not in scale, and figure 5 is the perspective view of the lower element with the niche. The case according to the invention is constituted by two superimposed jointed elements 1 and 2 of transparent plastic material, and it encloses for instancea coin 4. The upper element 1 is provided with one housing 3, which contains the coin 4, while the lower element 2 is flat. Both elements 1 and 2 are shaped in the form of credit cards. The body of the layers comprised between elements 1 and 2 is indicated with letter A of figure 3, which separately shows in enlarged detail some particulars of said layers. Between the two elements 1 and 2 there is a decorative imprinted layer, which in figures 2 and 3 appears in the form of a hologram 5, delaminable since loosely bonded to a specific support 6 of plastic material, made for instance of polyvinyl chloride. Element 1 with the housing has on its reverse a decorative imprint 7 printed for instance by lithographic printing, even in two colours, featuring the symbol of the case itself. From figure 1 it can be seen that said decorative imprint is composed of a series of squares. These squares may have a different colour than the ground, also comprised in 7. Below layer 7 there is a layer of covering opaque coat 8, so that the case symbol is visible by transparency only from the face of element 1 with the housing. Decorative imprints and identification and certification data with signature, concerning the enclosed piece, all indicated with 9 and appearing in figure 2 with letters X,Y,W,Z, are applied by printing, for instance lithographically or in silk-screen, on the white covering opaque coat 8. Hologram 5, with its support 6, which is in peripheral position, leaves a wide free area 10 in approximately central position. It follows that, through this free area 10, all the decorative imprints, as well as the identification and certification data indicated with 9, can be perceived, since they are visible by transparency, which of course permits the vision of hologram 5 as well. The delaminable hologram 5 with support 6 is bonded to the upper element and to the lower element 2 by means of the transparent adhesive 11 and therefore forms a single body with them. Of course, coin 4 is visible from both faces of the case, because of a printing spare provided also for layer 7 and 8. Hologram 5 is irreparably delaminated upon the pulling action of the adhesive 11, as exerted as soon as an opening attempt is effected on the case. As it can be seen from figure 4, which shows an alternative embodiment of the invention, represented with enlarged particulars, element 1' and element 2' enclose a body of layers indicated with B. A decorative multi-ink layer 5' is anchored in a discontinuous manner, that is on portions, to the lower element 2' and shows a free area 10' in approximately central position to permit the sight of the decorative imprints, identification and certification data, analogous to that indicated with 9, by the transparency of element 2'. The anchoring of the delaminable ink layer 5' to element 2' is discontinuous, because some portions are coated with transfer primer 6', which prevents said anchoring. Element 1' with housing 3' for coin 4' shows on its reverse an ink printing, even in two colours, of a decorative pattern 7' as a symbol of the case. This symbol is visible by transparency through element 1'. A covering opaque coat 8' is applied below said imprint 7'. The adhesive 11' bonds the two elements 1' and 2' on their inner layers. The decorative ink layer 5' is delaminated upon the pulling action of the adhesive 11', as exerted as soon as an opening attempt is effected on the case. Figure 5 illustrates the tray-shaped lower element 12 with a housing 13 in the form of a niche. Said element 12 is provided with a peripheral rim 14. Housing 13 for the piece is obtained into the bottom wall 15. The upper element, not shown in the figure, must be comprised within, and in contact with, the perimeter represented by rim 14.

Claims: A safety case of plastic material, generally in sheet and transparent, intended to contain a marketable piece (4) of precious metal, as a coin, medal, ingot and the like made of gold, silver or platinum, or a precious stone, a pearl, or a stamp of philatelic value or the like, which comprises two superimposed elements (1,1' and 2,2') to enclose said piece, bonded at least all along their edges to retain the piece since its coinage or preparation or anyhow from its first sale to the public, the case being characterized in that at least one of said elements, preferably the upper one (1,1'), is provided with at least one housing (3) in the form of a shell for a single piece and the other element (2,2'), that is the lower one, possibly flat, features, also by transparency, an indelible graphic pattern consisting of images and data for the identification and the certification of the piece and that between the two superimposed elements enclosing the piece provision is made, in order to benefit of an absolute seal not only against counterfeiting but also against forced opening, of an imprinted decorative layer (5,5') which represents a security printing pattern, which is joined to its support in a manner choosen as a loosely bonding to an interposed specific support (6) or a direct anchoring in a discontinuous way and which is therefore delaminable, with a visible irreparable laceration of the security printing pattern occurring as soon as an opening attempt is effected on the case, said imprinted decorative layer with an appropriate printing blank around the piece, being connected to the two elements also all along their respective edges, thus forming, because of the anchoring and/or bonding effect, a permanent unit with them. A safety case as in claim 1, characterized in that the seal against counterfeiting in the form of a security printing pattern is made of a holographic micro-embossed metalization coating (5), which is loosely bonded to an interposed support (6) constituted by a sheet of plastic material and is therefore delaminable, the coating with the support being bonded by means of an adhesive to both elements of the case and getting delaminated, with visible irreparable laceration of the security printing pattern upon the pulling action exerted by the overlying adhesive as soon as an opening attempt is effected on the case. A safety case as in claim 1, characterized in that the seal against counterfeiting in the form of a security printing pattern is a decorative multi-ink layer (5'), which is anchored on only some portions of its substrate, due to a previous discontinous coating with a transfer primer (6') on the remaining portions and consequently delaminable, the layer being bonded to the other element by an adhesive and getting delaminated, with a visible irreparable laceration of the security printing pattern upon the pulling action of the overlying adhesive as soon as an opening attempt is effected on the case. A safety case as in claims 1 to 3, characterized in that the security printing pattern features a figure, a sign, a writing, a letter, a number or the like, even in combination with one another and even in succession in any sense. A safety case as in claims 1 to 4, characterized in that the lower element may have a graphic pattern analogous to that of the conventional credit cards and in that both elements may be shaped as credit cards. A safety case as in claims 1 to 5, characterized in that the upper element is a plastic sheet with a thermo formed shell. A safety case as in claims 1 to 5, characterized in that the upper element is a sheet formed by blistering under vacuum in presence of the piece. A safety case as in claims 1 to 7, characterized in that the upper element is constituted by a transparent plastic material belonging to the group comprising polyvinyl chloride, polystyrene, polyester, polycarbonate, polypropylene and polyethylene. A safety case as in claims 1 to 5, characterized in that the lower element has the shape of a small tray, i.e. it is provided with a peripheral rim, and the housing for the piece is obtained with a niche in the bottom wall. A safety case as in claim 9, characterized in that the tray-shaped element is obtained by injection moulding. A safety case as in claims 9 and 10, characterized in that the tray-shaped element is made of a transparent plastic material selected in the group comprising polyvinyl chloride, acrylic resin, metacrylic resin and polycarbonate. A safety case as in claims 1 to 11, characterized in that the transparent lower element (2,2') shows an indelible graphic pattern in the form of decorative imprints together with identification and certification data and a signature, in part printed on said lower element, which can also be thermografically printed or punched, and in part visible (9), as they were printed, for instance lithographically or in silk-screen, on the reverse of the upper element (1,1'), by virtue of the transparency spared on at least part of said lower element (2,2'). A safety case as in claims 1 to 12, characterized in that the upper element (1,1') when transparent, feattures, with an appropriate printing spare for the piece, decorative (7) imprints on the reverse of said element, for instance by lithographic printing, even in two ink colours, representing the symbol of the case itself, all being visible by virtue of the transparency of said element. A safety case as in claims 1 to 13, characterized in that an intermediate opaque covering coat (8,8') separates the two inner layers of data and decorative imprints (7 and 9) respectively visible through the two faces of the case. A safety case as in claims 1 to 14 characterized in that the identification and certification data with signature are printed on a separate strip of paper or of other material, which may be numbered and crease-cut, to be incorporated in the case before closing the latter. A safety case as in claims 1 to 15, characterized in that the adhesive used is transparent. A safety case as in claims 1 to 16, characterized in that the holographic micro-embossed metalized coating incorporates an optical code, not visible in white light but appearing in monochromatic laser light only. A safety case as in claims 1 to 17, characterized in that the imprinted decorative layer representing the delaminable security printing pattern is associated to an optical code with an ink not visible in white light but readable in ultraviolet light only. A safety case as in claims 1 to 18, characterized in that the housing for the piece is composed of two complementary shells, respectively formed on the upper and lower elements, so as the volume and the conformation of said piece are distributed into the shells. A safety case, as in claims 1 to 19, characterized in that the lower element (12), realized in the form of a small tray with a niche (13) to lodge the piece in its bottom wall (15), can be combined to an upper element with or without a shell, at choice. A safety case as in claims 1 to 20, characterized in that it presents two or more housings, each containing a single piece, and each housing being protected by the surrounding imprinted decorative layer as a seal against counterfeiting.

Inventors: BENARDELLI, GIOVANNI, DR.
Applicants: ARYSEARCH ARYLAN AG
Application year: 1988
Main classification: B65D85
IPC codes: A45C11, G09F3, B65D85, G09F23, C23C14