Biplane with overprint "Pro Aero 1938"

75 Ct. 1938

Швейцарія

1923 MiNr. CH 184 in different colors, with black overprint. Only used for special post flight on 22-5-1938. Mint stamps are rare

Pro Aero

Junkers JU-52 aircraft & Matterhorn mountain 46 грн	"Pro Aero": 50 Year Swissair; Icarians 31 грн	"Pro Aero": Boeing B747 of Swissair 27 грн	"Pro Aero 1963": Sailplane in front of jet aircraft 23 грн
"Pro Aero 1949"; sailplane 1,100 грн	"Pro Aero 1946": Zögling Training Glider 790 грн	30th Anniv. of First Flight over the Alps by Oskar Bider	Biplane with overprint "Pro Aero 1938"