This is for a 1984 Lionel O/27 Gauge, New York Central GP-9 Powered Diesel Engine, #6-8477, USA, MIB. This NYC GP-9 Diesel Engine with Original Box is in excellent condition and worked well before being packed in the box. This collectible item is perfect for train enthusiasts. Please see pictures and contact if any questions and I will try to answer the best I can.