Sovjetska zveza
Sedaj prikazano: Sovjetska zveza - Poštne znamke (1923 - 1991) - 1 znamke.
1927
First International Airmail Congress
1. september WM: Nič Velikost polja: 80 Oblika: O. Amosova Gravura: litho Perforacija: 12½ x 12
![[First International Airmail Congress, tip Z]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/Z-s.jpg)
![[First International Airmail Congress, tip Z1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/Z1-s.jpg)
