Sorry i can't help at all, but could i point you in the direction of this site...
Sword Forum International
Thats the antique and military sword part of the site, you may get a few helpers there.
Hope it helps.
CX.
Manufacturers and Logos
The table below gives a list of the (mainly) Solingen cutlery firms with their logos and RZM code, wereknown, from World War 2.
From 1933 to 1936, the edged weapon manufacturers of the Third Reich placed their logo (or maker mark)on the reverse of their blades. In 1936, manufacturers reluctantly began to replace their logos with the codes assigned to them by the RZM Office. RZM is short for "Reichszeugmeisterei" and Zeugmeisterei
means quartermaster.
The RZM code was used on political blades only and was not used on military blades. Maker marks continued to be used on Army, Navy and Luftwaffe edged weapons until blade production ceased in 1941
(swords) and 1942 (daggers)