No way to answer without detailed information on all markings and features.
1980
Impossible to answer without the serial number.
100-450 or so
25-450 usd
This is for SMITH and WESSON firearms.
@1984
1956-1957
Call S&W and they will tell you.
100-500 USD
1974
Approximatey $425.00
50-500 usd