Ok sorry I did not give you much info. It is a 44-40 from what my grandfather says he had it restored in 1960, but it has not been fired. here are the pictures. What what I can find is a that says a Colt in the 8,000 serial number range was made in 1882.
here are couple of pictures.
http://s229.photobucket.com/albums/ee302/docroth/?
action=view¤t=DSC01165.jpg
http://s229.photobucket.com/albums/ee302/docroth/?
action=view¤t=colt45.jpg