I inherited a 4" Colt Diamond back blue in .38 Special, from my Dad. Diamond backs are just a scaled down Python. They are one of the very best revolvers ever made. Anything Colt made in that error was beautifully made. In my option no other firearm manufacturer can blue a gun like Colt can. Colt bluing is head and shoulders above what others do. The handguns colt produced in that error, be it Pythons, Diamond Backs, Woodsman's. Even the Huntsman and Tragetsman, and the Government models. We're just beautiful firearms. The Trooper MKiii were cheaper made guns to compete with the cheaper revolvers made by Ruger and others, and even the Trooper was well above what others made. Colts from that error were just too well made to survive. Firearms were being made less hand fitting and finishing and with cheaper manufacturing in the metal with castings. Colt just could not produce these firearms at a price that was compatible. It is sad the days of firearms made like that are gone. They have been replaced with aluminum, cast steel and plastic and molded or stamped out internal parts. One can handle a handgun from that error and a current made one and they can see and feel a big difference. We will never see firearms made like this again. When I go in a gun shop, I head straight to the used section. There's nothing but plastic in the new section. I would love to find a 4" blue Diamond back . 22. I think the Diamond Back .22 is the prettiest and most well made .22 revolver ever made. They give a revolver man the same feeling a shotgun man has with a fine made double gun. I don't see Colts from that error ever going down in value. It hasn't been too long a go the auctions sights had many for sale, that were new condition guns, now days you are fewer and fewer. The supply is drying up. Great gun and great find.