The Model 15 is a "K" frame. This includes 15-1, 15-2 and 15-3. Be sure to keep your old grips, they increase reasale value a great deal.
It is a K-frame square butt to be exact. They also made a round butt k-frame and those grips will not work on a square butt.
The model 65 is built on the K frame.
Smith&Wesson model 14
If you contact Smith & Wesson, they will give you that information.
No
Standard Catalog of Smith and Wesson, 3rd, edition
100-375 USD
Stainless Steel Chief's Special
Smith and Wesson Model No. 2
With the serial number that you have supplied,your Smith and Wesson model 37 was made in the year 1981.
50-250 USD
With the serial number that you have supplied,your Smith and Wesson model 10-5 was made in the years 1972-1973.
100-700 USD