The MTH Pennsylvania "O" Gauge n-6b Caboose #980766 20-91221 is a pre-built model train accessory designed for enthusiasts aged 17 years and up. This caboose features a brown color and is made of plastic with a 1:48 scale. It is part of the Pennsylvania Railroad corporate road name theme and is powered by AC with an analog control system. Perfect for collectors and hobbyists, this caboose is ready to be added to any model railroad setup for a realistic touch of transportation history. This unit is from an estate of a long time collector. As I am selling only for the estate, my knowledge is limited.