SN's ran from 70000 in 1960 to 108087 in 1965, so likely 1960.M43, Sn 724XX and a M12-1 SN C6003XX
.38 Military & Police Model of 1905, Third Change. Serial numbers ran from 146900 in 1909 to 241708 in 1915. I'm assuming the 34XX number on the frame is an inspector/assembly number. The SN on the butt should also be on the rear underside of the barrel and the back of the cylinder. Value depends heavily on condition and can range from $200 in fair to ~$2K in "as new condition".SN on butt is 1871xx
Standard barrel lengths for the 3rd Change model was 4" and 6". The book doesn't comment on which was more common.Also was the 6 inch length as common as the shorter barrels?
What you have is a model 64, also known as the .38 Military & Police Stainless. It is the stainless version of the model 10. It was very popular with many police agencies. It's built on the K (medium) frame. Chambering is .38 Special CTG (cartridge).serial number is 235xx the other number i spoke about was f283 and it has service ctg written on barrel thank you in advance for your time and consideration.