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August 2007

Colt Model of 1911 U.S. ARMY
Serial number 2425

Collector's Information

Disassembly Instructions

Parts Identification

Production Information

Colt Model of 1911 U.S. ARMY Serial Number 2425 (circa. 1912)  This pistol features the second type of finish -- known as "fine finish" or "dull finish" (which changed at serial number 2400) when the early fire blued small parts were finished to match the finish applied to the slide and frame.  Serial number 2425 was assembled on April 24, 1912.

A notation in the Colt production ledger indicates that "all pistols after serial number 2400 are dull finish."

This pistol was one of 350 shipped April 25, 1912 in the seventh shipment to Springfield Armory. Since numbers 501 - 1000 and 1501 - 2000 went to the Navy, this is the 1425th pistol shipped to the Army.

SN Range Shipped To Shipping Date
1 - 50 Springfield Armory January 4, 1912
51 - 100 Springfield Armory January 18, 1912
101 - 300 Springfield Armory February 3, 1912
301 - 500 Springfield Armory February 15, 1912
501 - 1000 U.S. Navy Yard, Brooklyn March 7, 1912
1001 - 1200 Springfield Armory March 21, 1912
1201 - 1500 Springfield Armory March 22, 1912
1501 - 2000 U.S. Navy Yard, Brooklyn April 10, 1912
2001 - 2150 Springfield Armory April 16, 1912
2151 - 2500 Springfield Armory April 25, 1912

Left side. This example bears the ordnance mark W.G.P., for Major Walter G. Penfield, in the form of a monogram stamped on the left side of the frame above the magazine release. Penfield inspected these pistols from January 2, 1911 - September 30, 1914. Serial numbers of Model 1911 pistols inspected 1 - 101500.  "UNITED STATES PROPERTY" marking rolled onto left side of frame.

This Model 1911 still retains the earliest style (Type I - concave without slot) magazine catch lock.  Serial number 2425 is on the right forward flat of the frame.  On the earliest examples, the serial number was located on the forward right side of the frame.

Horizontal serifed "H" on rear of slide above firing pin stop.  Barrel should also have this mark (horizontal serifed "H") on the rear of the hood.

Convex mainspring housing pin.

Convex mainspring housing pin.

Left side close-up.  Colt logo in a circle on the left side of the slide behind serrations until January 1913, until approximately serial number 20000.  Early style hammer and thumb safety.

Front of slide.

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