DJ Proficiency Badge in black, miniature version, by Wilhelm Deumer, Lüdenscheid. Cupal construction with soldered-on setup. Maker marked on the reverse with the micro RZM logo and RZM code “M1/120” for Deumer. Very good condition. No repairs or damage.
The black-colored version is much less frequently encountered than the standard silver miniature and is a rare variant.
Rare miniature!