Figured it out!!!!
Alan and Donna Soellner of WesternLeatherHolster.com explined to me that some 1860 Army's were made with a fluted, six-shot cylinder and short barrel. They are said to be incredibly obscure and rare.
Compare the 1860 Army short-barrel to the Colt 1861 Police...
He is making me a pair of modern high-ride, FBI forward cant belt slide holsters for my pair of Pietta 1862 Police Revolvers.
Next is a dual shoulder rig for a second pair of them!!!!!!