My .30 cal luger

[HerrKaiser]

Your numbers are “hidden” in the commercial variations like this. On the bottom of the takedown lever and side plate is a number, the one for your breech block is also one you’ll need to take down to find. Same with extractor (if numbered). Bottom of safety lever will have one (if numbered) and will the sear block. Again, many don’t. My all matching commercial has only a numbered barrel, frame, toggle train, takedown lever, and sideplate. Those are the bare minimum, after that it’s spotty on whether the other parts get numbered or not from the reports of others.