[lugerholsterrepair]

Maybe the owner was ashamed of what they had done and tried to remove evidence of a unit they were with by grinding off the unit marks? Not even a possibility. During the time unit marks were applied..German Soldiers were extremely proud of their service in WW1 and very patriotic. They did not lose the war. It was an agreement by the powers that they quit. Of course Germany was on the short end of it and paid reparations but the Soldiers came home proud.