This iconic model reproduces the prototype 4013, constructed in 1941 for the "Union Pacific" and features gray aluminium colour applied to the smoke chamber, and sides of the firebox. Briefly tested on DC and appears to run smoothly in both directions. Please note: Locomotives and rolling stock listed have not been used on my layout (which is British-themed) and have therefore not had substantial use for some time or even, perhaps, ever. If a buyer finds that the item does not meet their expectations when received I would ask that they immediately contact me as I will always do my best to put things right. I'm always happy to combine shipping if multiple items are purchased together. Please check my other listings for items relating to Santa Fe, Union Pacific, Southern Pacific and other North American railroads.