This Colt M1911 was shipped on September 30th, 1916 to the Commanding Officer at Springfield Armory in a 1,014 gun shipment.
The roll mark on this 1916 production M1911 is high on the slide but is commonly seen with pistols in this range.
There is an "S" on the back of the slide above the firing pin stop plate, around the disconnector hole on the top of the frame and on the hood of the barrel. This S is a provisional inspection mark of W.E. Strong who was a temporary Ordnance inspector for a short period of time in 1916.
This particular pistol is marked with the cartouche of "GHS" for Major Gilbert H. Stewart. Major Stewart was the inspector of ordnance from September 30th, 1914 to January 12th, 1918. His inspectors initials are on M1911's from Serial Number range 101,500-230,000 and M1917 revolvers ranging from 1-30,000.