A counterfeit stamp is designed to deceive postal authorities. The cancels may be printed on the stamps at the same time that the stamp design is printed. A stamp with a cancel and with full gum is likely a CTO stamp, as CTOs do not see actual postal use. CTO stamps are sold to stamp dealers at large discounts from face value. A neatly trimmed rectangular or square section from a stamped envelope that includes the imprinted postage stamp with ample margin.
Collectors generally prefer to collect stationery as entire pieces rather than as cut squares.
Some older stationery is available only in cut squares. A reproduction of a genuine stamp or cover. Such items are usually made with no intent to deceive collectors or postal officials. Catalog illustrations may also be considered facsimiles. FAKE A stamp, cover or cancel that has been altered or concocted to appeal to a collector.