Beginning of the barrel to end of barrel.
Call S&W and they will tell you.
1977
The serial number.
100-400 USD
50-350 usd
Impossible to answer because you did provide any information about the revolver or the serial number.
Call S&W and they will tell you.
16
250 USD or so
100-300 USD
You will have to call S&W
You will have to call S&W to find out.