I used the books "Colt .45 Service Pistols, Models of 1911 and 1911A1" by Charles W. Clawson and "U.S. Pistols

& Revolvers 1909-1945" by J.C. Harrison to verify the parts in this pistol.  The "H" appearing on the frame, slide

and barrel stands for Francis L. Hosmer, the Colt civilian inspector from 12/18/11 to 8/15/25.

Inside the frame are the "H" and a "Q".  The "Q" stands for P. M. Quinlan, the one who assembled the pistol.

He was an assembler from serial numbers 101-30300.

Colt Type 1 barrel with the correct sideways "H" with serifs, used from S/N 101 to about 6,500.

The "H" with serifs stamped on the rear of the slide.

Bolt face shows virtually no wear.

Colt Type "A" hammer with short beavertail and bordered checkering, used from S/N 1 to 8,900.

Rear sight is round top with "U" aperature.

Tapered front sight used from 1911-1924.

Early Colt safety lock tab with the thin tab, used from S/N 1 to 83,856

Slide lock with milled cut used from 1911-1924

Type 1 recoil spring plug with no detent, used from S/N 1 to 6,500.

Early Colt recoil spring guide, used from S/N 1 to 109,101.

Colt Type 2 magazine, blued with tempering that does not include the magazine catch slot and has the lanyard loop.