Luger of Unknown Origin

[Hotajax]

There's a 4-digit serial number on the barrel where the barrel threads into frame. On the frame there's a 5-digit number just below where the barrel joins the frame. These two numbers do not match, not even close.

There's a 2-digit number just above the trigger guard on the left side of the frame, on the takedown lever. This 2-digit number above the trigger guard is the same as the last two digits of the serial number on the frame.

There's a 2-digit number just below the rear sight. This 2-digit number is the same as the last 2 digits of the barrel number.

It's not in such great shape, missing a lot of blue. With the non-matching numbers of the barrel and frame, is this gun worth checking out further? My gut tells me it's a closet queen.

DWM, made in Germany, and a few stampings of a capital N with a crown above the N. Thanks for any pointers, I prefer not to post pics as a precaution.