Standard Catalog of Smith and Wesson
Your serial number was used by Smith and Wesson for the models 10,12,13,45,64,65,547.It dates this serial number to the year 1979.
1995
You will have to call S&W with the serial number.
No serial number = no answer.
1972
Your serial number indicates that your Smith and Wesson model 59 was made in the year 1975.
No serial number provided.
Impossible to answer without the serial number.
No serial number given.
Without a serial number, there is no way to answer.
You will need to buy or find a copy of the Standard Catalog of Smith and Wesson.