Nationalsozialistische Deutsche Arbeiterpartei badge, M1/15RZM

Nationalsozialistische Deutsche Arbeiterpartei badge, M1/15RZM - Ferdinand Hoffstätter, Bonn am Rhein. Very rare producer, famous by his not high quality made NSDAP badges. On this example you can clear see some "bubbles" on the enamel, but in general the badge in good condition without any other serious damage or traces of use.