We need more info to answer. Is this a non-firing replica- or a firing 1911A1 made by another company?
500 USD
military production of the 1911A1 ended at # 2693613 (1945) not sure who would have reproductions date for the 1911A1 but you can call the Colt factory and ask; 1-800-962-2658
Your colt 1911a1 was made by colt in 1945.
100-1000 USD and up depending on specifics
50-500 usd
1943 by colt
made by colt in 1943
made by colt 1918
It was made in 1945 by Colt.
Serial number
Proofhouse.com has Colt sn data.
Proofhouse.com has Colt sn data.