Airmail - Pro Aero - The 50th Anniversary of Swissair 1981
Now showing: Switzerland - Postage stamps - 1981 - Airmail - Pro Aero - The 50th Anniversary of Swissair - 1 stamps.
1981
Airmail - Pro Aero - The 50th Anniversary of Swissair
9. March WM: None Sheetsize: 8 Design: Hans Erni. Engraving: Courvoisier. Perforation: 11¾
![[Airmail - Pro Aero - The 50th Anniversary of Swissair, type ATT]](https://www.stampworld.com/media/catalogue/Switzerland/Postage-stamps/ATT-s.jpg)
