Used Colt Combat Commander .45ACP Nickel.  Polished Nickel throughout.  The nickel plating on the right side of the gun is riddled with imperfections.  Hard to tell if it is factory or aftermarket Nickel Plating.  The rollmarks are still pretty sharp.

Here on consignment.

Available here:  https://thewichitagunclub.com/product/used-colt-combat-commander-45acp-nickel/