PHQ card
PHQ cards are postcards issued by the British Post Office depicting the designs of their commemorative stamps. They are generally available to buy in main post offices about two weeks prior to the release of each new set of stamps. Description. The 'PHQ' stands for Postal Headquarters. All items published by the Post Office are given a number which is prefixed by letters. The first card issued, on 16 May 1973, was numbered PHQ1, and the numbering sequence has continued to the present day. There are however two gaps in the sequence, and two duplications. The number PHQ24  was originally set aside for the 9p Silver Jubilee card (issued after the rest of the set), but when it was issued the card was numbered PHQ22E. The next set (Wildlife cards, issued 5 October 1977) had already been allocated the number PHQ25, and so the number PHQ24 was never used. The London 1980 Exhibition card, issued 9 April 1980 to commemorate the 1980 International Stamp Exhibition, and the set of five cards for London Landmarks, issued 7 May 1980, both had the reference number PHQ43. The set of five cards for Gallantry, issued 11 September 1990, and the set  of four cards for Astronomy, issued 16 October 1990, both had the reference number PHQ129. Consequently, the number PHQ130 was unused. History. The first card issued was the 3p W.G. Grace stamp from the set of stamps commemorating County Cricket, issued on 16 May 1973, but not released until mid-July. Subsequent cards have been issued about two weeks prior to the release of the stamps. This enables collectors to obtain the cards before the issue of the stamps so that they can attach the relevant stamp and obtain First Day of Issue postmarks. When they were first issued, the  PHQ cards were intended to be just an occasional picture postcard for sale to the public at Post Offices and Philatelic Counters. However, right from the first card issued, some enterprising Stamp Dealers realised that there was a potential new Stamp collecting area, and stamps were fixed either to the face of the card, or the back, and postmarks for various cricket matches played between July and September 1973 were obtained. In August 1973 a second card was issued for one of the stamps in the set to mark the 400th anniversary of the birth of Inigo Jones, architect and  designer. Over the next three years several more single cards, and a few sets were issued, from July 1976 onwards there has been a set of cards issued for every new set of commemorative stamps that has been issued. The first two cards issued, 1973 Cricket and 1973 Inigo Jones, are larger than the current cards, measuring 120 mm x 172 mm in size, while all cards issued from PHQ3 onward are 104 mm x 148 mm in size. This can be confusing for new collectors coming across the first two issues for the first time, if they are not  aware of the size difference, they tend to think they are worthless copies. Collecting PHQ cards. There are three main areas of collecting interest. Many collectors like to collect only the unused cards, but some like to obtain them with first day of issue postmarks. Others like to obtain them with special handstamps that have some connection to the stamp subject matter. Also, stamp collectors will usually put the stamp on the back of the card, but a very popular variation is for the stamp to be applied to the face of the card, so that the postcard picture, stamp  and postmark are all visible on the same face. Postmarks and handstamps. The first card was not put on sale until two months after the issue date of the stamps, so would not have been eligible for a First day of issue postmark. However the card is known to exist with 16 May 1973, Birmingham FDI cancellation (back-dated by favour), but it is much more collectable with the July and September pictorial cricket postmarks. The cricket postmarks to look out for are 21 July, Benson & Hedges, and 1 September Gillette Cup. The early issues. Below are the issue dates  of all the early cards, issued up until July 1976. Since this date a full set of cards has been issued for every commemorative set, and for some of the definitive issues. All subsequent issues of British Commemorative Stamps had a set of PHQ Cards issued. Differences and errors. Like the stamps they depict, because of the printing processes involved, errors and differences will occur in the printings. Some of the notable differences and errors are listed here. Other postcard issues. Occasionally the post office issues Stamp Cards of stamps that are not listed as PHQ. This also includes copies  of Definitive Issues.