Condition: Nearly all are Mint or Near Mint. I did notice one with a notch on the edge.

Includes (but not limited to):

Pan American

Compania Nacional Cubana de Aviacion

Graf Zeppelin

TWA

Deutshe Luft Hansa

Compania Mexicana de Aviaction S.A.

Gilpin Airlines

Deruluft

Golden Arrow

Legiforgalmi

Century Pacific

Siam LTD

Wilmington-Catalina Airline

Societa Italiana Servizi Aerei (SISA)

Galais-Mediterranee

S.A. Aero Espresso Italiana

Cesholovenske Statni Aerolinie (CSA)