The 125th Anniversary of the Birth of Kazimierz Twardowski 1991
Now showing: Poland - Postage stamps - 1991 - The 125th Anniversary of the Birth of Kazimierz Twardowski - 1 stamps.
1991
The 125th Anniversary of the Birth of Kazimierz Twardowski
10. October WM: None Sheetsize: 50 Design: J. Konarzewski Engraving: PWPW. Perforation: 11:11½
![[The 125th Anniversary of the Birth of Kazimierz Twardowski, type DFU]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/DFU-s.jpg)
