Hey there Joe, you getting into Colts now?
Between 1930-1937 Colt manufactured the Ace Model and on the right side of the border you could see $3000 for an excellent example, this side of that border...around $1500-$2000. The next model was the Service Model Ace with the pre 1945 blued version commanding a premium, $3000-$5000 for Ex condition in the states and , of course, less here. The post war version will be worth much less...$1000-$1200 give or take a few.
Just my 2 cents, hope it helps a bit.
Blair