Pattern Plate (Hungary)

Hello, everyone recently I came across a Facebook post in a Hungarian Numismatic Group, where someone posted this. I and the also owner would like to know what could . The Pattern looks identical with the 1 Thaler of Károly Batthyány (ONLY one sided)  N#79101

Something like this will probably be auctioned only sporadic, as such  finding a value will be quite hard to impossible and you would need to auction it off to get a true market value.