Yes.
Need the serial number to answer.
2015
Your smith and Wesson model 64-3 was made from 1977-1987.
10-1000 USD depending on specifics.
100-1000 USD or more depending on specifics
0-150 usd
No such sn for a 38 spl
1972
Seldom exceed 125 USD
Impossible to answer without the serial number.
50-400 usd