The focus is poor on the reverse, but judging by the crown I think I would grade it XF if I was "accessioning" it for my collection. That dangly bit in the center of the crown fades out fairly quickly on a lot of these coins, so I think with it sharp and the other details on the crown brim it would make XF.
Moneytrend estimate: SS (VF) 4 Euro, I'd be happy to sell such a coin for 2 Euro, but an interested collector can easily find it in a 50 cent bin at any numismatic convention in Central or Eastern Europe.
I collect coins and tokens which circulated in Africa from 18th century to 2000. I sell about 7000 illustrated world coins from http://www.avscoins.com.