I found a stainless 2" mod 60-7 with black synthetic grips that I have been having trouble identifying and dating. I have been unable to locate the serial number in my SCSW 3rd Edition (probably my fault).

Anyway, the serial # is BRU 82xx. The serial # is not the smooth deep stamping I have normally seen on S&W guns (each letter and digit has multiple tiny pinpoint imprint marks inside the recessed part of the lettering).

The barrel is not pinned and a code inside the cylinder frame is 475 (with a matching 475 under the grips on the left side). There is another number under the left grip (21051). I suspect the grips are not original (markings inside say they fit S&W J Frames).

The book shows the model 60-7 to be a 1990 production change with a "new sight width of 1/8" for Swiss contract". Could the fact that it was made for the Swiss account for the strange serial number or am I just missing something?

Thanks in advance for your help.
All info appreciated.......