The serial number, located on the bottom of the grip frame, is K798XXX and its a model 15-2 chambered in 38 S&W spcl
Any interesting information on this? It was my grandfathers, and maybe my great grandfather's also.
Your Model 15-2 was produced between 1961 and 1967. I don't have a serial number range by year, unfortunately. It is a K-Frame .38 special revolver and should be able to handle most .38 special ammunition. This gun is a continuation of the older K-38 revolver (pre-1957).
These were offered with a 4" barrel and a 2" heavy barrel version was introduced in 1964. A few 5" barrel versions exist and are rare. Finishes were blue or nickle. Rear sights are S&W adjustable with a Baughman ramp front sight. Original grips are diamond insert checked hardwood. 2000 Model 15-2's were marked for the U.S.A.F and are considered rare and sell for a premium. Check your firearm for unusual markings or features, if any.
If your gun is in excellent condition, it's valued around $275. If your gun is as-new with the S&W box and all papers, it could be worth as much as $400.
The Model 15 series is a high quality .38 revolver. I've owned specimens in both 2" and 4" barrels. These guns served police, military and security personnel as well as civilians for years until they were discontinued in 1999.
A K-frame collection is a nice way to begin collecting S&W's. Companion models that compliment the M-15 are:
.38 Specials:
Model 10 - Military & Police version, fixed sights (some with a heavy barrel)
Model 64 - Stainless Steel version of the Model 10
Model 67 - Stainless Steel version of the Model 15
.357 Magnum
Model 13 - Heavy barreled M&P .357 Magnum
Model 19 - K-Framed .357 Magnum
Model 65 - Stainless Steel version of the Model 13
Model 66 - Stainless Steel version of the Model 19