Originally Posted by Jim Watson
A knowledgeable examination could tell if it were correct and even if original, but there are no numbers to match.
Few US firearms have multiple serial numbers for parts matching like foreign products. An Ithaca military contract pistol is not one of them.
A Colt made from 1937-1943 will have the serial number under the firing pin stop as well as on the receiver, but none of the others.
Correct, non Colts have specific manufacturing marks and lettering to look for that should match the time period it was produced. I had a conversation with some dealers about this, and apparently this is a market for counterfeiting. But if you know what to look for, it's pretty easy to spot a fake (at least thats what they tell me).