The Colt New Services were a very robust revolver. I own several including a M1917, .45 Colt and .455 Eley. I found them to have a long rough double action pull. I like to double action pull on the large frame S&W revolvers better. Both are very accurate at 25 yards given the fixed sights.
--fjruple
Edit: Just a side note the serial number on the butt is an US Army #. The serial number on the yoke part of the frame is the Colt serial number.