Polish Operation of the NKVD 1937-1938 2017
Now showing: Poland - Postage stamps - 2017 - Polish Operation of the NKVD 1937-1938 - 1 stamps.
2017
Polish Operation of the NKVD 1937-1938
29. September WM: None Sheetsize: 100 Design: Agnieszka Sancewicz Engraving: PWPW (Państwowa Wytwórnia Papierów Wartościowych) Perforation: 11¾:11½
![[Polish Operation of the NKVD 1937-1938, type HWK]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Poland/Postage-stamps/HWK-s.jpg)
