Stamp intended to prepay airmail postage; the first recorded is the 25 cent rose, Italian express stamp, 200, 000 of which were overprinted in 1917.
I think most worldwide (and US) collectors recognize the US airmail postage stamp I'm writing today. ... The stamp exists in two different perforations: 11¼ and 10½x11 ...
New Zealand philately: first New Zealand air mail stamps ... He used the stamps on various airmail covers, all of which contain the full set of stamps and are postmarked ...
eBay: Find US AIRMAIL STAMP C-18 "BABY ZEPPELIN" MULH OG VF $100++ in the Stamps , United States , Back of Book , Air Mail category on eBay.
dealers in fine British Africa stamps including South West Africa 1931 Airmail Postage Stamps mint used multiples and Postal History
dealers in fine Africa and British Africa Stamps including South West Africa 1930 Airmail Postage Stamps and Postal History
Airmail collectors, or aerophilatelists, come from all walks of life throughout the world. ... the usage of airmail covers and stamps in their specialised ...
New Zealand philately: New Zealand air mail stamps 1935 ... This cover has the set of 1935 airmail together with a George V Jubilee commemmorative. ...
The Penny Black, the world's first postage stamp. The first idea for unitary payment of ... The other three major catalogs do not give any special status to airmail stamps. ...
Russian/Soviet Visual Airmail Stamp Museum: Their symbols and history.