This is an authentic and play packed action cars set of the vintage X-601 Lionel trains from the 1960s. The set includes a variety of cars and accessories. The brand is well-known for its quality and attention to detail, and this set is no exception. The gauge is O, making it compatible with many other Lionel trains and accessories. The set is perfect for collectors and train enthusiasts of all ages, and would make a great addition to any collection. The cars are beautifully detailed and painted, and the set comes with all the necessary accessories for easy play and display. This is a rare find for any collector, and is sure to be a cherished addition to any collection. I picked this up at Grand Mothers House and it's untested and in the Original box.