This Williams 4 Car Aluminum Passenger Set is a great addition to any model railroads and trains collection. The set features the classic Milwaukee Road O Gauge design and includes four passenger cars, perfect for adding realism to your layout. The Gauge aspect further specifies that this set is designed for O Gauge layouts. This set falls under the categories of Toys & Hobbies, Model Railroads & Trains, Railroads & Trains, and Passenger Cars. Williams O gauge W-LL1032 Golden Memories Milwaukee Road passenger cars. Four to include Appleton, Coffee Creek, Jefferson River, and baggage 530 all with twin lighting and silhouette window strips. In like new condition with original boxes. These cars are all aluminum and have a terrific appearance. I’ve not seen any other cars like these for sale. (Was it a limited edition I don’t know) If you have any information on that please contact me with it. Pictures speak for themselves.