that is determined by the revolvers serial number.....................
The Smith and wesson model 36 was made from 1957-1966.The model 36-1 was started in 1967.
27 years old
The Smith and Wesson model 19-5 was made from 1982-1987.
The smith and wesson model 19-3 was made between the years 1967-1976.
Your serial number dates your Smith and Wesson model 59 to the years 1977-1978.
No such model in the S&W line.
@ 62-77
67-77
I can say that your smith and Wesson model 15-2 .357 magnum was made between the years 1961-1966.
With the serial number that you have supplied,your Smith and Wesson model 10-5 was made in the years 1972-1973.
36 years old
41 years old