Now showing: Poland - Postage stamps - 1951 - Labour Day - 1 stamps.
25. April WM: None Sheetsize: 100 Design: St. Łukaszewski Perforation: 10¾-14
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![[Labour Day, type KT]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KT-s.jpg)
