Airmail - Pro Aero 1949 1949
Now showing: Switzerland - Postage stamps - 1949 - Airmail - Pro Aero 1949 - 1 stamps.
27. April WM: None Sheetsize: 25 Design: Albert Yersin & Hans Erni. Perforation: 11¾
![[Airmail - Pro Aero 1949, type TQ]](https://www.stampworld.com/media/catalogue/Switzerland/Postage-stamps/TQ-s.jpg)
Now showing: Switzerland - Postage stamps - 1949 - Airmail - Pro Aero 1949 - 1 stamps.
27. April WM: None Sheetsize: 25 Design: Albert Yersin & Hans Erni. Perforation: 11¾
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