The 100th Anniversary of the Foundation of the Society for Science in Poznan 1957
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1957
The 100th Anniversary of the Foundation of the Society for Science in Poznan
15. November Wz: Keine Bogengröße: 100 Design: J. Skoracki Zähnung: 12½:12¾
![[The 100th Anniversary of the Foundation of the Society for Science in Poznan, Typ YB]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/YB-s.jpg)
