The 8th Trade Union Congress in Warsaw 1949
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1949
The 8th Trade Union Congress in Warsaw
31. mai WM: Aucun Taille de la feuille: 30 Modèle: E. John Perforation: 10¾; 11¼
![[The 8th Trade Union Congress in Warsaw, type XKG]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/XKG-s.jpg)
![[The 8th Trade Union Congress in Warsaw, type XKH]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/XKH-s.jpg)
![[The 8th Trade Union Congress in Warsaw, type XKI]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/XKI-s.jpg)
