I don't think I can help, other than to say I've taken a look through Numista (which I'm sure you've also done),and couldn't find many medieval Hungarians with a crown atop the Hungarian shield as in the right hand photo when rotated 90 degrees clockwise (and the right side of your shield being nearly illegible further adds to the challenge), and none with what looks like the IE of VNGARIE around 9:00-10:00 on the shield side. If the crowned shield has a double barred cross on the right, it could be the one used by Wladyslaw Jagiello (Ulaszlo I) in the 1440s, https://en.numista.com/catalogue/pieces59944.html But I could not find a reasonable match to your coin.
A few CCF members have the right catlaog, and maybe can help.
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