Now showing: Bulgaria - Postage stamps (1879 - 2024) - 1 stamps.
13. July WM: None Perforation: 13½ x 13
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![[The International Esperanto Congress, Varna, type CQW]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/CQW-s.jpg)
