Hopefully, one of the Forum staff will move your post to the The Harley Nolden Memorial Institute for Firearms Research Forum.
You will have a better chance of a helpful response. Your revolver certainly is not a sem-auto pistol.
I will go search the blue book and see if I come across anything.
Are you sure it is a Colt? What are the markings and the caliber if you know?
Last edited by lamarw; May 1, 2013 at 06:23 PM.