Duty Plate
Many modern stamps are printed from two plates, one being the same (the Key Plate) for all values; the other,
Amur Province
A briefly autonomous administration in eastern Russia which issued stamps in 1920 bearing the Russian inscription "Amur Province - Postage
Air Stamp
A stamp issued specifically for mail transported by air.
American Topical Association (A.T.A.)
The leading authority for Thematic collectors around the world. The A.T.A. publishes its own journal and handbooks on a wide
BPA Certificate
A certificate issued by an expert of the British Philatelic Association, which indicates the genuineness or otherwise of a stamp
Aerogramme
A special lightweight single sheet of paper printed and gummed and designed when sealed to form an air letter. The
Agency
A commercial firm, which promotes and sells the postal products of the country or countries it represents; a post office
Admirals
In 1912 and 1925, Canadian stamp series depicting King George V in full dress uniform as admiral for the Royal
AAT
Australia Antarctic Territory
Commemorative
A commemorative stamp is a postage stamp issued to commemorate a place, event or person. Most postal services world-wide issue
Bogus
A fictitious stamplike label created for sale to collectors. Bogus issues include labels for nonexistent countries, nonexistent values appended to
Albino
An impression made without colour from an uninked stamp plate or die or from the printers' type. They usually occur