Strange 1920 Commercial

[Lyn Islaub]

Wish I could post scans, but I saw this one at a Gun Show here in Phoenix today and they didn't allow cameras.
It looked to be a very clean & normal 7.65 cal. 1920 Commercial Luger with the serial numbers in the normal places; side plate, take down lever, rear toggle and trigger. The full S/N was 2965 with no suffix. It had the relieved sear bar, stock lug and Crown N proofs you would expect to see on a 1920 Commercial, but the strange part, was that where you would normally find the alpha suffix on the barrel and frame, there was a Crown stamped. The crown was similar in style to the one used in the proofs above the "N", but was 3 times the size. It almost looked as if the crowns had been stamped over the original letters, but I couldn't state that for sure. The owner told me a long tale as to why it was a 1911 Commercial and was worth $1400, but I declined to tell him it might be otherwise. Have any of you encountered these "crown" stamps before???
Thx, Lyn