Your colt 1911a1 was made by colt in 1945.
1944
In 1944.
That is not a serial no of a Remington 1911A1 they stopped in 1945 with 2465139.
It was produced in 1942.
made about 1917
About 1969 with that serial number for a Colt goldcup national match .45
I thought that would be in the end of the serial range of Ithaca but 1944.
1943
By it's serial number.Go to proofhouse.com to find the date of manufacture.
Model 1911a1
Serial number
1945