Can you help me identify a coin

I bought this coin

The reverse looks like N#17985

But the obverse looks completely different. Can anyone help my identify what it is? 

fake Khorezm 20/100 rubles

https://www.staraya-moneta.ru/lib/13311/ - article in Russian. See chapter about 1970s. If you have way to run surface metal test, check amount of zinc in alloy. Article tells that fakes are made of brass.

If you decide to collect Khorezm rubles, get a book about them first. You need the way to tell which variant you are buying before paying for it.

What about this?

https://www.numisbids.com/sale/10554/lot/1906

https://www.cgbfr.com/khorezm-republique-populaire-sovietique-20-roubles-ah-1339-1921-sup,fwo_383252,a.html

Thank you for your links. So it looks like there are graded coins with the same combination of obverse and reverse as I have, which is good. I guess I will just need to get mine checked by an expert