There are a few areas that I feel suspectible. But I have not owned a Mauser Luger yet (if not counting repro of repro, a.k.a. Interarms
, it's in general:
1) The serrate head of the thumb safety looks worn, but the supposed "arc" under the safety is faint... almost does not exist.
2) The joint area of barrel and receiver is suspectible. The triangle shaped edge on receiver does not look sharp enough.
3) The muzzle band edge does not look sharp.