The Lionel 2105 Black Diamond Express Train Set from 1975 is a vintage O27 gauge model featuring a black color scheme. This ready-to-go train set includes an analog control system, a three-rail system, and is themed around transportation. The set includes a locomotive with the brand Lionel, representing the Black Diamond Express corporate roadname. Perfect for collectors or hobbyists looking to add a nostalgic touch to their model railroads and trains.