Congress Poland 1830 1/2 Złoty

This half złoty, struck in Warsaw amid the brewing November Uprising, bears the double-headed eagle of the Russian Empire on its reverse—a stark reminder of foreign oversight in Polish affairs.

The coin's silver content, at about 0.083 ounces, reflects the fractional currency needs of a region under imperial control. Its obverse features a crowned Polish eagle, a design choice that must have irked some mint workers given the political climate. We know it was produced at the Warsaw Mint, but records from that year are patchy; the exact number minted might have been lost in subsequent upheavals.

As for rarity, it's not the unicorn some enthusiasts make it out to be. I've handled a few over the years, each with that telltale edge reeding that fools no one.