Now showing: Bulgaria - Postage stamps (1879 - 2024) - 1 stamps.
15. July WM: None Perforation: 13
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![[Airmail - Joint American-Soviet Flight Apollo-Soyuz, type CGA]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/CGA-s.jpg)
![[Airmail - Joint American-Soviet Flight Apollo-Soyuz, type CGB]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/CGB-s.jpg)
![[Airmail - Joint American-Soviet Flight Apollo-Soyuz, type CGC]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/CGC-s.jpg)
