Good looking and good quality gun.
These were liked by the Luftwaffe IIRC.
EDIT: Just now noticed the buckle.
Here some nice pics and info on the well made handgun (including the Luftwaffe angle):
Hungarian Weapons Frommer Handguns
The Hungarian M37 auto pistol. - Free Online Library
MG42.US • View topic - Femaru M37 1943 Luftwaffe rig, matching mags
As for Eastern European guns, Ive always liked this and the CZ27