• Colnect-4422-296-Internatinal-Philatelic-Exn-Warsaw.jpg
Issuer: Poland
Date: 9/4/1960 (1960 sheets)

INCOMPLETE

Block 1 (0, 0 x 0)
0, 0: 10z+10z



External links:
Colnect 199386..tion_Polska_60