No way to answer without detailed information on all markings and features.
1964
Call S&W and they will tell you.
Call S&W and they will tell you when it left the factory
Need a detailed description of ALL markings.
Insufficient information to answer the question. Identify the item in question and resubmit.
@ 1976
You will have to call S&W and give them the serial number.
50-500 usd
42-45
Impossible to answer without a serial number.
100-340 USD
50-450 usd