Eagleeye, if you did not know it, in the early 1960's, Colt 1917 revolvers (chambered in 45 ACP)were in the gun magazines and sold as govt. surplus for $29. That was cheap money even then. Gun parts suppliers such as Numrich (still in business today) sold replacement barrels in .357 and 45 Colt. So at the time it was a cheap surplus gun (kind of like all the military bolt action rifles) that many would tinker with. Some altered guns were done fairly well (like yours) and some were shade tree hack jobs. Who ever altered your gun, attempted to make it look somewhat nice. The checkering on the backstrap was an original feature of an original shooting master and the full checkered target stocks was a feature of the officers models and pythons of the mid to late 1950's. I am guessing the bottom of the grip frame has the US army 1917 ground off? It appears you still have the lanyard look so maybe not. Again, if the elevation of the front sight works with the fixed notch rear sight and shoots to where you want it (and I believe who ever did this job made sure of it), then you have a parts gun that works as a shooter and most likely a good shooter. Hopefully you did not pay what an original shooting master sells for today and whoever sold you the gun had it priced accordingly. Originally US Army 1917 revolvers had smooth walnut stocks.