No serial number = no answer.
1975
@1964
Would have to at least know the frame size.
You must call S&W
K
it was made around the 1960's
If its a 5 shot its most likely a J frame. If its a 6 shot its most likely a K frame.
It is a J frame.
No
Frame and bottom of grip
Impossible to answer without the serial number.
Some older models of S&W revolvers you have to remove the grips to find the serial numbers engraved on the grip frame.