Guys
I'm sure this has been discussed before, but I need a little help on some repair marks on an HFT.
On the barrel flat, in addition to the serial number is an S and then a B surrounded by a diamond. The same marks appear on the left side of the grip frame, along with a date code. The butt has a star after the serial number, but the barrel flat does not have the star stamp.
Can you help with the S and the diamond-B?
Thanks.

__________________
Jack
SWCA #2475, SWHF #318