my .45 Hand Ejector U.S. Army Model 1917 is a commercial model with sn: 1894xx made some time in the late 1930s (I believe). It has the S&W trademark on the left side of the frame and S&W monogramed checkered diamond walnut grips indicative of commercial models. The butt is not marked U.S. ARMY MODEL 1917 nor is the barrel flat marked UNITED STATES PROPERTY. The sn is matching on the butt, cylinder face, and back of the extractor star. No sn on the barrel flat and the yoke has an assembly number only which matches an assembly number on the frame. Now the strange part: the barrel flat is marked "USN 416" and the butt is marked "GSP 84" indicative of military service, probably during WWII. Can anyone shed some light on this military marked commercial revolver?