Although, I'm suspicious of this Diamondback, being marked on the barrel as having been chambered in .357 & .38 special, it does look to be as new as if it was just built yesterday by Colt? And, it appears to never have been fired(As well as the cylinder not even having been turned)? If someone did(In fact!?)rechamber this Diamondback in the more potent .357 magnum caliber-then I'd certainly question the "Sanity" of that person? On the other hand, in view of the mystery of this revolver, I can't help but to wonder(What if?)this could have been some sort of an Colt "Prototype" that could have belonged to an Colt's employee or otherwise(In some way(Although unauthorized!)?)ended up in the hands of the public? If so, wouldn't this gun then be somewhat valuable as a "Collectible" Colt Diamondback?