The Athearn boxes MRC HO 1:87 9pc Diesel Loco Cars SP with Control Master II is a vintage model railroad set featuring a mixed lot of passenger cars, box cars, and diesel locomotives in a 1:87 scale. The set includes 9 items in total, all ready to go in an analog control system. Made of plastic and metal materials, these multicolored cars represent the Southern Pacific corporate roadname and are from the Era 3 time period manufactured between 1970-1979. Perfect for collectors and hobbyists aged 17 years and up, this set offers a nostalgic and detailed addition to any model railroad layout.