Hi guys, I have this 20mm Oerlikon case with the above headstamp. I know what the 1944 and OeZ stand for. I would like to know who MR is in this instance. The database wants to tell me it is French but I am unsure.
Also note that the flash holes have not been made with this cartridge for whatever reason.
And at last, the never ending question; what would this piece be worth roughly?