original and intact vintage american industrial a-frame mobile three tier supply and/or sign display cart salvaged from the national sign company factory, chicago, il. the heavy duty sign cart is comprised largely of welded joint heavy gauge angled steel with old factory green paint finish mostly intact. the two narrow trays or shelves are made of cold-rolled sheet steel with double-sided rail guards to prevent content spillage. the spoked cast iron swivel casters remain in excellent working condition. measures 52 1/2 x 32 x 53 1/2 inches.