John Casimir Vasa Grosz

The John Casimir Vasa grosz, minted during the Swedish invasion of the 1650s, often featured dates that were as unreliable as the king's promises, reflecting the chaos of wartime production.

These copper coins were struck in various Polish mints, like Warsaw and Gdańsk, on planchets that varied wildly in size and quality due to material shortages. You'll find the obverse bearing the king's bust, a nod to his Vasa lineage, while the reverse typically showed the Polish eagle—simple designs meant for circulation, not collectors' cabinets. Mintage figures are murky; records from that era burned in later conflicts, so we can't pin down exact numbers.

As for myths, I've heard tales of these grosz funding secret alliances, but that's likely embellished. In truth, they were just everyday money, debased and worn from use. If you handle one, note the irregular edges—a reminder that even coins have their bad days.