Impossible to answer without knowing the exact model and a detailed description.
Colt has never made a 45/410 pistol
the 45. colt combat commander i worth from 1100.00 to 9000.00 depending on the gun research carefully.
If you call Colt they will tell you when it was made.
A Colt 1911 commercial .45 with that serial number was made about 1971
Proofhouse.com has Colt sn data.
50-500 usd
100-500 USD
made about 1970
Priceless!
50- 200 usd
$650 to 750
do you have a selling price ??