No matter what model - it's a keeper!!
Colt was originally not in the shotgun business. With the popularity of Winchester and other repeating shotguns, Colt started designing and building a few models of shotguns. The story, as I understand it, was that Winchester promptly made a couple of sample revolvers and took them to Colt. Basicly, the threat was, "You make a move on our market and we'll take you on in the hand gun market." Colt decided that carving out a small share of the shotgun market would not be worth the risk of having a new major player such as Winchester enter the handgun market and the two companies respected an unwritten arrangement not to step on each other's toes going forward.
I can't vouch for the veracity of this story, but I've never heard it refuted by anyone.
Colt shotguns were manufactured only for a few short years and did not sell in any great quantities. They are highly sought after by American Colt collectors. If you ever decide you aren't keeping it, look me up.