Standard Catalog of Smith and Wesson, 3rd ed.
Bring it in to a professional. S
50-175 USD
Depending on EXACTLY what you have and its condition, 100-2000 USD
100-500 USD
Can't be answered without a DETAILED descripiton of ALL markings.
K130218 was produced in 1951
The Smith and Wesson factory. You will have to request a S&W letter for more information
What is the manufactures date on an Iver Johnson revolver serial # Q18255
A Model 25 will be chambered either for 45 ACP or 45 Colt as it comes from the factory.
Stainless Steel, six shot, K-frame revolver with adjustable sights. I have one and I like it. You can also use 38 special amunition in it if you want to save money.
1972
Call S&W and they will tell you.
1957