Assman did have a valid RZM number M5/8 for Uniform Accessories. Here is a list of RZM codes:

M1 - insignia
M2 - sub-contractors
M3 - symbols or emblems
M4 - belt buckles
M5 - uniform accessories
M6 - aluminum products
M7 - daggers
M8 - metal accessories
M9 - meeting badges (tinnies)
M10 - musical instruments
M11 - NSDAP Long Service Medals
M12 - NSDAP miniature Long Service Medals

Jim

Looking for EKI spanges, first model intermediate and second model L/12.