Call S&W and they will tell you when it left the factory.
Smith Wesson 340PD?
Made @ 1964.
Your Description and serial number indicate that you have a Smith and Wesson model 30,or 31 which was made between 1961-1970.
The model 53 was made from 1961 and ceased production in 1974!
Anywhere from $350 to $800 dollars depending on the year it was made and the condition it is in.
1947
The value of ANY fiream is based on exact make, model, condition and originality. First, be sure that your revolver IS a Smith & Wesson, and not just in CALIBER 32 S&W. If it is a true Smith & Wesson revolver, values can range from about $75-$200, or more for rare specimens in excellent condition.
Need to know the caliber in order to answer.
If you call S&W they will tell you when it left the factory.
Call S&W and they will tell you when it left the factory. It could have been made a week to a year before.
2015
No engineering changes have been made.