Ithaca M1911A1 U.S. Army .45 ACP, 1944 WWII, Parkerized, British-Proofed, 5 Inch, 7+1
This 1944 Ithaca M1911A1 U.S. Army pistol is a World War II–era .45 ACP service sidearm with its classic parkerized finish and forged steel construction. It retains hallmark USGI features and carries both U.S. military acceptance/proof marks and later British Birmingham proof stamps, indicating post-war civilian proof for the UK market. A Colt-marked barrel is installed, adding further period-correct interest.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Condition: Fair - Generally clean, some residue or smudges, slight corrosion.
Bore Rifling: Fair Rifling - Worn rifling, slight loss of definition.
Specific Condition Notes: There is finish loss on high edges. Minor surface pitting is present in spots. The frame and slide show minor handling wear with dings and scratches.
What's Included
- 1x 7-round steel 1911-pattern magazine with witness holes (unmarked)
- Leather belt holster with thumb-break retention strap
Produced in 1944 for the U.S. Army, this Ithaca M1911A1 reflects wartime manufacture with a parkerized finish over forged steel components. The pistol is chambered in .45 ACP and configured in the traditional full-size 1911 pattern with a 5-inch barrel and 7+1 capacity.
It retains classic USGI features such as fixed GI sights (blade front and square-notch rear), vertical rear slide serrations, a wide-spur checkered hammer, and a short GI-style trigger. The arched mainspring housing with lanyard loop and brown checkered plastic grip panels with reinforcing rings complete its period-correct profile.
Military and proof markings include the FJA acceptance stamp and a P proof on the slide. British Birmingham Proof House markings are also present (crown over BNP and crossed-swords/sceptres), indicating the pistol was civilian proofed for the UK market after the war.
The barrel hood is marked "COLT .45 AUTO," identifying a Colt-marked barrel installed in this Ithaca frame/slide assembly. This mix of parts is consistent with the era and aligns with the pistol’s service and post-war history.
Action is semi-automatic with single-action, short-recoil operation. The parkerized slide and frame/receiver match the GI finish scheme, while the fixed sights and grip configuration maintain the original service setup valued by collectors of WWII-era pistols.




