Original NSDAP Membership Badge "Buttonhole Type" – Marked RZM M1/8 – Ferdinand Wagner Pforzheim

Original German NSDAP membership badge made of metal.
The item represents a less common and sought-after variant designed to be worn directly in the jacket buttonhole.
The reverse features a clearly visible, stamped RZM control code and the numerical maker marking M1/8.
The attachment system consisting of a circular disc on a solid stud remains fully stable and functional.
The reverse surface exhibits a distinct natural dark patina and minor oxidation signs, confirming its historical authenticity.
This badge is a textbook example of official insignia issued to party members between 1933 and 1945.
The RZM coding system was implemented to standardize and monitor the quality of uniforms and insignia for National Socialist organizations.
The code M1/8 was assigned to the prominent manufacturing firm Ferdinand Wagner of Pforzheim.
Products from this manufacturer are highly regarded by collectors due to their specific stamping style and historical significance.