1947
Smith Wesson 340PD?
2015
No engineering changes have been made.
Smith and Wessons model 547 revolver is a double action revolver chambered in 9mm.these revolvers were made from 1980-1984.
Your Smith and Wesson revolver was made in the year 1985.The value will be between 375-600 dollars depending on overall condition of your revolver and a good bore.
S&W has never made a 35 cal revolver for commercial sale.
Made in 1970
50-500 USD or so
Call S&W and they will tell you when it left the factory.
Made @ 1964.
No such weapon ever made by S&W.