I see halos and sharp edges and mill cutter marks on the toggle, all of which are good...Chamber is in the white and barrel extension around it is blued; good again...
A good close-up of the frame ears would be nice...I can't really make out any round mill cutter swirls...they're probably there, I just can't make them out...
OMG...I'm starting to sound like a Luger Collector...
Don't get these guys started on the brown/black holster issue... 
BTW: Just judging from browsing GB looking for shooters, I'd say the
*low* estimate for your Luger would be $1000...(I don't bother looking at anything over that, so I can't give an upper estimate)...