3rd Reich NSDAP Reichsparteitag 1938 badge

Very nice but aged mildly NSDAP German Reichsparteitag 1938 Tinnie, layered zink,alluminium. Frontside: Two men holding the NSDAP flag and broken chain on an elevation under the eagle with swastika. Around the figures the date 1938 and Reichsparteitag. Mildly aged because of usage, no rust! Backside: Safetypin attached and maker marked G. Bremer from Markneukirchen. RZM M9/4