Among the political org. belts I have there is one which puzzles me. It’ s obviously a period belt. it’s brown with slight wrinkling to the surface, it has obviously carried something heavy on a D ring in the middle where the small of one’s back would be because this area is slightly stretched downward and the inner region is darkened with sweat/grime. It has the usual nickel r4iveted buckle catch and the tongue is so stitched so that the stitching doesn’t show on the outside. The tongue has an RZM stamped within a double circle but it is also stamped M7/36 below the RZM stamp. Any ideas?