International Stamp Exhibition "Helvetia 90" - Geneva - Airships 1990
Now showing: Vietnam - Postage stamps - 1990 - International Stamp Exhibition "Helvetia 90" - Geneva - Airships - 1 stamps.
1990
International Stamp Exhibition "Helvetia 90" - Geneva - Airships
10. September WM: None Perforation: 12½
![[International Stamp Exhibition "Helvetia 90" - Geneva - Airships, type ]](https://www.stampworld.com/media/catalogue/Vietnam/Postage-stamps/1394-b.jpg)
