This is a Walthers HO 1:87 Scale PS-3 Rib Side Twin Hopper 6 car set. Road name Illinois Central. Walthers stock number 932-943. Car numbers 73605, 73618, 73647, 73681, 73720, 73753.Color is Brown with White lettering. Knuckle Style couplers. This item is New/Old stock the is new in the original box. Rare out of production set. Will combine shipping.