Steam Big Boy 4-8-8-4 Articulated Heavy Freight Loco Powered -- Union Pacific #4015 (black w/silver smoke & fire box)

Built by American Locomotive Works, these heavyweight freight haulers could reach a maximum speed of 80mph with a maximum tractive pulling power of more than 7000 horsepower at 30mph. The models feature operating valve gear, headlight and a complete cab interior.