This is a 5 piece Williams Aluminum Passenger (CONGRESSIONAL) set is from. The cars are still in their clear wrappers. Set # 2601 w/ box & foam. Included are: a Baggage car; a Vista Dome (Betsy Ross); 2 Coaches William Penn. & Molly Pitcher & an Observation (Alexander Hamilton). Each car is approx. The cars are illuminated w/ black silhouettes in the windows. They should be able to navigate both O31 & O42 curves. Thank you for looking and purchasing.