Not enough details to answer.
No way to answer without detailed information on all markings and features.
Impossible to answer without knowing the caliber.
It should be marked on the barrel.
The Standard Catalog of Smith and Wesson, 3rd ed, by Supica and Nahas.
No serial number or description = no answer.
Your Description and serial number indicate that you have a Smith and Wesson model 30,or 31 which was made between 1961-1970.
The Standard Catalog of Smith and Wesson, 3rd edition, by Supica and Nahas.
Impossible to answer without knowing the model and caliber.
Need to know the caliber in order to answer.
Need to know the caliber in order to answer.
Need to know the caliber in order to answer.
@1960