The Lionel 6-8955 Southern U36B Locomotive is a vintage O Gauge model train engine in green color, manufactured in 1979. This ready-to-go pre-built locomotive features a Bo-Bo wheel configuration and is made of pressed steel, white metal, resin, plastic, and diecast materials. With an analog control system and light function, this diesel locomotive is a part of the Transportation theme, representing the Southern Pacific corporate roadname. This collectible train engine is designed for advanced hobbyists aged 17 years and up, making it a valuable addition to any model railroad collection.