Set of 4 1956 Poland Maritime Ships Used Stamps 5 10 20 60 GR SC #719-721 #723

Set of four 1956 Poland maritime postage stamps featuring nautical-themed designs, Polish text, and denominations of 5 GR, 10 GR, 20 GR, and 60 GR.

Cataloged as Scott #719–721 and #723, with multicolor ship and maritime imagery.

Good pre-owned condition; all four stamps are visibly cancelled/used, with visible discoloration and wear.

Uncertified and ungraded.