"Pro Aero 1941" 1 Fr. — Switzerland, 1941
"Pro Aero 1941" (Switzerland, 1941), face value 1 Fr., “Special flight "Pro Aero"” series. Photo, catalogue value, details and photo identification.
- Series
- Special flight "Pro Aero"
- Issue date
- 1941
- Face value
- 1 Fr.
- Colors
- Dark blue green
- Print run
- 160,264
- Yvert
- CH PA34A
- Michel
- CH 395
- Stanley Gibbons
- CH 423
- Scott
- CH C35