The Lionel Prewar Blue Comet 263E Engine & 263 Tender Set is a vintage model train set featuring a steam locomotive in a striking blue color. This collectible set is part of the Three-Rail System and weighs 6.5 lbs, making it a substantial and high-quality piece for model railroading enthusiasts. The set includes a tender and operates on an analog control system, adding to its authenticity and charm.