Hello Maksim, Very nice coin. DO NOT CLEAN YOUR COIN. Cleaning ruins value.

Your coin is a counterfeit Elizabeth 5 kopeks, as you have properly identified. We will have to change our page on these coins, because our page says the coin is worth zero. But our page is not correct. Even though your coin is counterfeit, it is worth approximately $50 US dollars, perhaps a little more.

The image we posted below is of a coin like yours which we found in an auction database. In the auction, a collector bought it for $47 US dollars. The description in the auction database notes that the coin is a copy (not a genuine 5 kopeks), but, even as a copy, it is worth $47.