Military or commercial?

[Aaron]

This is a 1918 DWM 9mm Luger, stamped "Germany" just above the right grip. It also lacks two of the usual acceptance marks. We recognize this as a pistol which was intended for the military, but was diverted for export for commercial purposes during the financial turmoil following WWI. What is the meaning of only two acceptance marks? Since it seems to have never been put into service and may not have been delivered to the military, would it be correct to classify this as a commercial variation?