MId to late 40s
You need to call S&W with the serial number to find out.
No serial number given.
You will have to call S&W and give them the serial number.
No such serial number in the Model 60 range.
1973. 336's after 1972 had the first two numbers in the serial subtracted from 100 to get the age.
Mid 1980's.
1973
1970's-1980's probably.
You will have to call S&W to find out.
Imposssible to answer without knowing which S&W model it is.
Impossible to answer without a serial number.
You must call S&W with the serial number.