Aviation - The 10th Anniversary of Helicopter Mail 1958
Now showing: Sweden - Postage stamps - 1958 - Aviation - The 10th Anniversary of Helicopter Mail - 3 stamps.
1958
Aviation - The 10th Anniversary of Helicopter Mail
10. February WM: None Design: Lars Norrman. Engraving: Arne Wallhorn. Perforation: 12¾ vertical
![[Aviation - The 10th Anniversary of Helicopter Mail, type EF]](https://www.stampworld.com/media/catalogue/Sweden/Postage-stamps/EF-s.jpg)
![[Aviation - The 10th Anniversary of Helicopter Mail, type EF3]](https://www.stampworld.com/media/catalogue/Sweden/Postage-stamps/EF3-s.jpg)
