May 26, 2026This stamp was issued for use on the first Hessian glider mail, 19 October 1930.
May 26, 2026These stamps were issued on 22 June 1930 for the Großflugtag (Regensburg Great Flight Day).
May 26, 2026These stamps were issued on 12 April 1925 for the Regensburger Osterflugtage (Regensburg Easter Flight Days).
May 26, 2026These stamps were overprinted for use at the Frankfurt Spring Flights in 1925, but were never used. As such, they…
May 26, 2026These stamps were overprinted for use on glider/sailplane flights at Büchelberg bei Pforzheim in 1924/1925.
May 26, 2026This stamp was printed for use on Junkers-Luftverkehr (Junkers Air Transport) flights between Berlin, Stambul, and Angora, on 5 July…
May 26, 2026Unlike official airmail stamps, semi-official airmail stamps were issued by aviation companies, air shows, and other aviation-related organizations. The semi-official…