100-400 USD depending on condition.
1974
The Model 19 was not made in stainless steel.
100-425 USD
A K frame, stainless steel revolver made between 1982 and 1986.
look inside the crane area toward the front
300-400 USD
Yes Smith and Wesson made a hammerless shotgun. I did read at one time they were the first to do so, but they did not sell a lot of them because of the price back in the late 1800's
I believe that the last Smith and Wesson hammer less model was the stainless model 60 chief,s special that was made in 1998. IT had a 2 1/2in barrel and was double action only.
Probably a Model 66
The serial number is on the butt of the weapon. From that, you can determine when shipped by calling S&W or looking it up in the Standard Catalog of Smith and Wesson.
1970
Yes, numerous catalogs have them.