Product Overview
D.V.G ”Deutscher Volksgenossen Bund” (German Fellow Countryman League)
On the reverse is marked: M9/312
All of other party pins with an "M" marking start with M1
The M9 mark is for "Day and Event badges", M9/312 number was assigned to Fritz Mannheim. Why M9 marking instead of M1 is unknown and we can only guess/speculate.