The Model 14 is officially the K-38 Masterpiece and was S&W's premier .38 Special target revolver along with the K-32 Masterpiece in 32 S&W long and the K-22 in .22 LR. All were set-up the same so the shooter could practice with the K-22 then switch to the centerfire gun in competition. Barrel lengths were 6 inches and 8 3/8ths. The Patridge front sight and fully adjustable rear sight were standard. These guns had Combat Masterpiece companions with 2 inch and 4 inch barrels, ramp style quick draw front sights and fully adjustable rears.

Your 14-3 K-38 Masterpiece looks to be in very good condition. The previous poster is correct about the trigger. The original trigger would be case-colored and have fine grooves on its face. Yours is engine turned on the flats with a smooth polished face. A reasonable common modification done by shooters who fire mainly double action where a smooth faced trigger is easier on the finger. Any K or L frame square butt grips will fit.