Membership Pin Rzm M1/152 real or fake?

[TimeTraveler]

Hey, I'm really new to this and I just got a Membership pin from a antique store
I did a little research before deciding to buy it I know the Otto Hoffman pins are fakes but what about RZM M1/152?

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[crack]

M1/152 is a known maker of these pins. See here. I don't see any problems with your badge.