Poland 1960 – 100 Years of Polish Stamp – Block of 4 × 40gr – Used

A block of four from the 1960 Polish commemorative issue marking 100 Lat Polskiego Znaczka Pocztowego — the centenary of the first Polish postage stamp. Each stamp depicts the original 1860 issue within a stylised circular postmark motif, printed in green, red, and blue.

Denomination: 40 groszy. All four stamps bear a clear circular cancellation. The block retains its original perforations on all sides, with the sheet margin inscription 100 LAT POLSKIEGO ZNACZKA POCZTOWEGO visible at top. A clean, collectible used block in good condition — a centenary issue with strong thematic and philatelic appeal.