I have come across 7.65/.32 cal pistol marked on the left side of the weapon "FEGYVERGYAR-BUDAPEST-FROMMER PAT.STOP CAL 7.65 mm (32). It is single action with a grip safety and an external hammer. The left side serial number is 3334XX, on the right it is stamped r12XX with an AR stamped on the upper right over the triggerguard. It appears to be in working order with a few rust spots. What is the story/value of this weapon. Is it safe to shoot with fmj ammo etc, thank you in advance for any help.