That is not a serial no of a Remington 1911A1 they stopped in 1945 with 2465139.
I thought that would be in the end of the serial range of Ithaca but 1944.
your Remington rand was made in 1917.
Your colt 1911a1 was made by colt in 1945.
In 1944 by Remington Rand
Your 1911A1 pistol was made in 1944.
I just don't think that's a Remington made 1911A1 Serial no, are you sure it's no mixed parts? May be Colt, 1924................
It was produced in 1942.
made about 1917
About 1969 with that serial number for a Colt goldcup national match .45
Please check the link for the Manufacture Date codes details on the Remington Society of America.