Email smith and Wesson for the answer
If you contact Smith & Wesson, they will give you that information.
1955 -1956
1963-65.
Made @ 1964.
Impossible to answer without a serial number.
With the serial number that you have supplied,your Smith and Wesson model 37 was made in the year 1981.
1968
@1974
74-75
63 yrs old.
1977