Crusty 'ol Luger

[magazineman]

Hello, The boys over at my usual hangout, the 1911 Pistol Forum, recommended asking you guys about this one.

I recently acquired this pretty rough, "truck gun" condition Luger in a low-value trade (a Minibike )

It has no barrel markings, but I did take pics of all visible exterior stamps.

The magazine is a modern repro.

So what do you think I have here? I'm thinking it's a messed-with WW1 pistol, but not sure.

Thanks! ---------- MM