This is a vintage Lionel graduated trestle set, model 5025, gauge O-27, with a box included. It is a great addition to any model railroad enthusiast's collection, especially those interested in building, tunnels, and bridges. The set is complete and in great shape, ready to be displayed or added to your layout. The brand Lionel is well-known for its quality and attention to detail, making this a must-have for any serious collector.