Old 30 cal.

[Edward Tinker]

Hard to say, all matching, original shape?

$500 min, could be $1100 if really nice (so $600-$800 is normal for one in nice shape)

Personally, I see most 30 luger (7.65mm lugers) go for less than a military 9mm, and especially so if mismatched or reblued.

And there should / needs to be a crown N on it in several places, that is the proof marking, if very light or gone, it might have been reblued.

Ed