Interesting Post WW1 Commercial

[ithacaartist]

There are serial numbers in the Commercial data base that exceed 94k. Post-WWI assembly of Commercial Lugers involved scraping all possible parts together, IIRC, so the long frame with unrelieved sear bar and stock lug and without grip safety may not be so anachronistic or unexpected.

My impression is that the dimensional difference between short and long frames would probably exceed the entire extent of the flange.