100-500 USD or so
Need to know the caliber in order to answer.
You can get it lettered by S&W.
@ 112 years old
Made @ 1964.
50 yrs old
Requires hands on appraisal
Anywhere from $300 to $550.
Impossible to answer without more information, such as caliber and type of action.
Cannot be determined from just the serial number. Need a DETAILED description of ALL markings.
K
You can get a letter from S&W for 50 USD
It could be one of many. Impossible to answer without knowing caliber.