Commercial Mauser Lugers were marked with Mauser "banner", but none were marked DWM.
Thx for mentioning that. I didn't think of those for two reasons: 1) Mauser commercials are more scarce than DWMs AND 2) IIRC aren't most (if not all) Mauser commercials actually in 9mm? When he said "30 luger" I automatically thought "DWM". The first German military Mauser made lugers arrived in 1934 and IIRC Mauser did not make many lugers at all before then.