Looks to be 10 Kopecks - Alexander II / III / Nicholas II - Russian Empire (1547-1917) 2 obverses shown: Engravers HI (active 1867-78) and НФ (1877-82). Coins are 0.500 silver.
Lets see the edge. Looks like two reverse dies, as in a mule. I am thinking that it is a magicians coin.