SUPER RARE  The Athearn Roundhouse RND77706 AC44C6M Norfolk Southern 4052 is a HO scale diesel locomotive replica of the Norfolk Southern Engine. This pre-built model is ready to go with a DC power type and analog control system. It features light function and is designed for a two-rail system. The transportation-themed locomotive is perfect for hobbyists and collectors aged 17 years and up who enjoy model railroads and trains.