This vintage AHM HO scale operating coal and gravel conveyor is an unassembled kit from the 1960s-1970s. It includes a conveyor, coal, and gravel, and is compatible with scenery for model railroads and trains. This unit, featuring a Yard King, is made of plastic and painted in multi-colors. The conveyor is not painted, and the set is graded C-7 excellent. It weighs 1 lb and is recommended for children ages 8 and up. The model is a 1:87 scale and is a great addition to any transportation-themed collection.