The MTH Rail King O SW-7 Switcher Diesel Engine in Chicago & Eastern Illinois colors is a high-quality model train engine designed for O gauge railroads. Featuring a multicolor paint scheme with light, DCC, and sound functions, this Proto 3.0 engine is a must-have for model railroad enthusiasts. With a grade of C-9 Factory New-Brand New, this switcher engine is sure to enhance your railroading experience with its realistic details and impressive performance. New but open box.