[Thor]

Almost looks like a 1920 Commercial DWM that someone put a Navy barrel and rear sight on. The rear sight bluing is not the same (or lack thereof) as the rear of the receiver and the barrel looks SALT blued to me and the majority of the rest of the gun is rust blued. From the picture it looks like a crown N on the receiver (commerical) and an M on the breech block, perhaps the whole toggle train is off an Original Navy. Like Steve Martin the comedian says " What the Bleeep is that???" BTW, the frame looks like an Erfurt frame to me, not a DWM but the pictures are clear enough, or close enough to be sure.