I’m looking for ammunition specific information on Rheinische Metallwaaren u. Maschinenfabrik and their relationship with AEP during WWI. I know that before WWI they had factories in both Düsseldorf (where they were registered and had their corporate office) and in Sommerda where they bought the old Dreyse arms and ammunition plant in 1901. Before WWI all their 9mmP (and I am assuming other ammo) was headstamped RMS. I have no evidence that the Düsseldorf plant produced 9mmP before February 1917 (where they used the H headstamp). In fact from my only three boxes of “H” headstamped 9mmP all have cases and bullets produced by RM Düsseldorf but were loaded by AEP in Belgium (code Pi) http://iaaforum.org/forum3/viewtopic.php?f=8&t=13732.
Is there any reference on Rheinische Metallwaaren u. Maschinenfabrik AG like the ones that Brandt has in the back of his book on pistol cartridges??? Or, any other reference on the company from an ammunition prespective???
Any idea of the significance of the code “H” used by the Düsseldorf plant??? Did they actually load other calibers or where they only a producer of components as they appear to be for 9mmP. Note that the boxes containing RM S headstamped 9mmP showed the manufacturer as “Hs” which is consistent with the “H” code being used by the Düsseldorf plant.
Is there any evidence either plant continued to produce ammunition after WWI??? I have one RM *S * headstamped that appears to me to, perhaps, be post WWI production.
I have a photo of AEP loaded 9mmK and 9mmBL boxes from 1918 with cases and bullets also shown as code Pi. Does anyone know what the headstamp was for the rounds in this box? There is also a 9mmK box loaded by AEP (Pi) in 1917, but the case manufacturer code is “S”, apparently Spandau.
There is an interesting relationship between between these two companies during WWI. Does anyone have some insights?