Germany 1936  (May 5), Pictured Postcard  Graf Zeppelin, First Airmail by Hindenburg,  from Friedrichshafen to New York,  First Flight circular,  red cachet "Deutsche Luftpost,  Europa-Nordamerika'  and Frankfort airmail cds tying LZ 129 50 Pf. and 15 Pf.

Netherlands 1929 PUC First flight, Sent via KLM by First Night flight. 149 items flown, 1st Return card Rotterdam to  London , 15 May 1929,  SG436, Mu # 84. cover franked with 1928, Flying Dove Coil 1c+ 2½ c + 4 c .  tied by cds black.  signed by pilot on reverse.  
 

France Air Mail stamps 1927-2007: military stamps, 1920-1998  pre-canceled stamps., mixed condition, Mounted in a spring album of the German Schaubek company. Cat. V.  1000 €

When Ukraine declared full independence in 1917 in response to the Bolshevik revolution, the Ukrainian People's Republic suddenly needed to create all of the symbols of state sovereignty, like a coat of arms, postage stamps, and paper currency, almost from scratch. Postage stamps, of course, were far more important then than they are in today's internet world, and Ukraine enlisted some of the foremost graphic designers of the day to create stamps that conveyed a vision of a free Ukraine.The Ukrainian People's Republic finally did issue its own stamps in 1918. They were designed by Heorhii Narbut and Antin Sereda.