This item is a vintage Hornby R154 Southern Railways "King Arthur" Class N15 steam locomotive, model number 795 "Sir Dinadan". It is designed for OO gauge model railway layouts. The model features a green livery with the Southern Railway branding. It is powered by a DC motor and includes its original packaging. I've lubricated the pistons and wheels with a little watch oil. Runs forwards and backwards on my rolling road, and that's the extent of my technical knowledge. Looks in good, clean condition but the box is fair only. Any questions please ask.