This is a Russian beard tax token from the reign of Peter the Great, who set out to modernize Russia by getting everyone to shave. Anyone who wanted to keep a beard had to buy one of these tokens (which bore the legend "the beard is a superfluous burden"). Costs varied by profession -- nobles and officers paid 60 rubles, top merchants paid 100, and so on. Additionally, everyone passing into a city while wearing a beard had to pay a kopek's worth of face-fur-toll.
Update: You can buy replica beard tokens, too.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.