A stamp issued against payment of a special fee, so that acknowledgement of receipt of the postal item will be

Stamp intended to prepay airmail postage; the first recorded is the 25 cent rose, Italian express stamp, 200, 000 of

Travelling. Used on stamps or on cancellations of various nations, particularly of Belgium and France, "Poste Ambulante" indicates that the

A briefly autonomous administration in eastern Russia which issued stamps in 1920 bearing the Russian inscription "Amur Province - Postage

The leading authority for Thematic collectors around the world. The A.T.A. publishes its own journal and handbooks on a wide

A commercial firm, which promotes and sells the postal products of the country or countries it represents; a post office

In 1912 and 1925, Canadian stamp series depicting King George V in full dress uniform as admiral for the Royal

Australia Antarctic Territory

An impression made without colour from an uninked stamp plate or die or from the printers' type. They usually occur

Independent state between France and Spain, which does not charge for internal mail. Before 1928, Spanish and French stamps were

An expression used by auctioneers and dealers to indicate the lot or stamp is sold without their usual guarantee and

Stamps supplied in rolls for use in vending machines were, in early examples, imperforate, or perforate in one direction only,

Paper manufactured under neutral conditions with a pH greater than 7.0, containing no acidic additives.