It says its weight is 0.21 grams and has a diameter of about 5 mm.
I don't even know which way is up, so put in two pictures with my best bets


It's obvisouly a shield, of some sort n the obverse, and a cross with crowns on the other. I have found something in the Hungary list which seems close enough, but I haven't been able to confirm it, since there's a lot of similar ones out there.
I've got the tip to check this site, but it's all a jungle to me and everything looks the same