Call S&W and they will tell you.
50-100 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.
The serial number.
1977
1973 or so
You will have to call S&W to find out.
No way to answer without a detailed description of all markings, features, caliber, sn, sights, action type, etc..
The number on the butt is the serial number. The serial number will allow you to date it.
S&W will be happy to tell you if you call them.
@1961
S&W will furnish a letter for 50 USD