Colt 1911 dating
I am looking to find out what time period it does come from and a price range that this barrel would fetch?
The barrel has a gothic “H” and a gothic “P” (No serifs) on the area visible through the ejection port.
Best Karl Just chiming in here to say: You have a treasure, it being your grandfather's gun and all.
You are really taking a risk shooting it, as these older Colts can develop cracks in a bunch of known weak points on the frame and slide.
The expanding gases that push the projectile out also forces the slide back and by doing so ejects the casing and chambers another round.
So using those serial numbers, 25,001 is dated in 1913, and 425,001 would be dated 1918.. You already stated it was purchased after WWI so those dates are probable correct.
The grip safety is automatically engaged when not in use, so it cannot fire unless the trigger is actually pulled. The second safety is a manual safety that turns on and off with a flip of a switch.
Although Colt is credited with creating the 1911 because it had the government contract, it does have numerous manufacturers.
You will be turning a 00 gun (not to even mention the sentimental value) into a paperweight.
The Colt M1911A1 is a semi-automatic large-frame pistol chambered in .45 ACP or .38 Super.
The reason I am posting this is because my grandfather also gave me a spare barrel that he had bought at the end of WWI just in case he needed one (he liked having spare parts for everything).