Got a question....
 

Check out the serial number on the barrel, does that look unusual? Why would the halo effect be so pronounced on the serial numbers and the witness mark but not on the 8.82?

http://www.auctionarms.com/search/di...temnum=5296329

rk

Numbers stamped on the curved portion of the barrel flange, to include serial numbers on early Lugers (1900-1906), typically will not develop a halo. Numbers that are stamped after blueing further out on the straight portion of the barrel usually develop the halo effect. Perhaps something different about the structure of the metal created by the machining, or subject to different wear, or ??? I don't know why.

The 'halo effect' is the result of wear on high spots caused by deformation of the metal in the stamping procedure. The numbers on the inside curve of the barrel flange are in a location protected from most wear, while the numbers on the shaft of the barrel are more likely to contact objects in use, particularly the acidic leather of the holster. Refinishing usually removes the high spots if buffing or sanding is employed, so that's why the 'halo effect' can be a good indication of original finish.