Colt manufactured this gold-plated (washed) single-action-.22-caliber revolver in 1961. The commemorative was only offered through Kansas dealers. The first revolver in this series was presented to the Governor of Kansas in the year of the Centennial.
My late brother gifted this gun to me. I've wanted to shoot it many times, but I always change my mind after getting it out of the cabinet. It's unfired since leaving the factory and I've read that the value is $300 to $600, the $300 being fired and the $600 being unfired.
This gun will never be sold by me because of the sentimental value, so I don't mind that it would cost me $300 to fire it just once. I do believe that one day before I die I will take it out and shoot it.
Our family has no ties to Kansas and my guess is that my brother likely horse-traded for the gun rather than buying it. I've put a note to my heirs in the case that I like to think that they will keep it and shoot it.
If you have an interest in old Colt Commemoratives, there are some books available on the subject. Some are out of print, but often you can find a used one on Amazon for a fair price. Search for old books on Colt Commemoratives now.
One particular Commemorative Colt that I regularly see up for auction and it always catches my eye, is the "Battle of the Marne." It commemorates the French and British Armies forcing the Imperial German Army to retreat 40 miles from the Marne River in World War I. As attractive as I find this gun, I would feel a bit silly carrying it and firing it. Just me.