1926 Soviet 10 Kopeks

The 1926 Soviet 10 Kopeks was struck from zinc, a material choice that reflected the era's material shortages rather than any innovative design whim.

This coin, minted in Leningrad, featured a simple hammer and sickle on one side and the denomination on the other. At just 1.8 grams, it was lightweight enough to slip unnoticed into a pocket, which wasn't always a good thing in those uncertain times. The zinc composition made it prone to corrosion, turning many examples a dull gray over the years.

Records from the Soviet era can be spotty; we know production ramped up after the 1924 currency reform, but exact mintage figures vanished in bureaucratic reshuffles. That's numismatics for you—sometimes the coins outlast the paperwork.

Some collectors prize these for their patina, a polite way of saying the oxidation gives them character.