This is nicer than I thought it could be. According to R.L. Wilson's book it was made about June of 1017. Issued to a field grade officer at Ft. Huachuca. He retired in Tucson and had the gun converted to 45 L Colt by Bob Jenson who was a Colt dealer in the late 40's. It locks very tight, bore is perfect, and Real Ivory grips are fitted perfectly.