Hungarian Mint Thailand Coin? Please help identify this

I got this coin for a few dollars today. It is heavy so i'm pretty sure it's silver. It also says in small numbers .999 on the obverse. On the edge it says "Hungarian Mint King Rama the Fifth." I looked up in Krause and its not in Thailand coins or Hungary. It's also not in my odd coins catalog. Does anyone know the mintage, whether it's a bullion or commemorative issue, etc.? Thanks. It's kinda interesting.

 

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You're not going to find medals in Krause - it's a medal for Rama V made in Hungary.

 

Oh it's a medal. I didn't even think of that. Thanks!