The RZM Codex states
M1-Insignia M9-Meeting Badges
M2-Subcontractors M10-Musical Insturments
M3-Symbols or Emblems M11-NSDAP ser.medals
M4-Belt Buckles M12 Min. ser. medals
M5-Uniform Accessiories
M6-Aluminum Products
M7-Daggers
M8-Metal Accessories
I do not know how accurate the codex is, but most rzm products that are marked tend to reflect this list.
Randal.
