1974 100 Złotych Environment

This 1974 Polish 100 Złotych coin features a detailed engraving of the European bison, a species once nearly extinct, as part of its ecological theme.

That bison, standing amid stylized forests on the reverse, was chosen to highlight Poland's conservation efforts during the communist era. The coin itself was struck in silver by the Warsaw Mint, with a diameter of 33 millimeters and a weight of 16.5 grams. While exact mintage figures are murky—likely due to incomplete records from that period—we know several thousand were produced for circulation and collectors.

The obverse bears the Polish eagle, standard for the time, but it's the reverse that sets this apart, with its nod to environmental awareness in a politically charged decade. I suppose you could say it's the numismatic equivalent of a nature documentary on state TV: informative, but with a scripted edge.