The 70th Anniversary of Esperanto and The 50th Anniversary of the Bulgarian Esperanto Association 1957
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1957
The 70th Anniversary of Esperanto and The 50th Anniversary of the Bulgarian Esperanto Association
27. juli WM: Inga Perforering: 13
![[The 70th Anniversary of Esperanto and The 50th Anniversary of the Bulgarian Esperanto Association, Typ AES]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/AES-s.jpg)
