'B' or 'N' stamp:
ahead of pre war serial # on the barrel flat (or in shroud), rear face of yoke and by itself on right side grip frame on commercial guns (only on left side grip frame post war) for an original Blue finish or for an original Nickel finish with that letter. The lack of either the 'B' or 'N' can indicate that it left the factory nickeled. Also there was a larger B behind the barrel serial # for the Bright blue optional finish in the post war era - early ‘50s when satin blue was standard.
“I've seen nickel Triple Locks with N stamps. I've seen them without it, too. Pre-war guns MAY have an N, or they may simply lack B's. The post war and the 1950s period, was one of much evolution. There was the usual transition when finish code letter stamps were dropped and frame code letter s/n prefixes began, when there were neither letter stamps on major parts (except the butt)."
ahead of pre war serial # on the barrel flat (or in shroud), rear face of yoke and by itself on right side grip frame on commercial guns (only on left side grip frame post war) for an original Blue finish or for an original Nickel finish with that letter. The lack of either the 'B' or 'N' can indicate that it left the factory nickeled. Also there was a larger B behind the barrel serial # for the Bright blue optional finish in the post war era - early ‘50s when satin blue was standard.
“I've seen nickel Triple Locks with N stamps. I've seen them without it, too. Pre-war guns MAY have an N, or they may simply lack B's. The post war and the 1950s period, was one of much evolution. There was the usual transition when finish code letter stamps were dropped and frame code letter s/n prefixes began, when there were neither letter stamps on major parts (except the butt)."