very robust and structurally sound c. 1950's vintage american industrial three-tier rolling stepladder salvaged from the national sign company factory, located in chicago, il. the weathered and worn orange enameled finish is original and remains largely intact. the pierced metal "sure grip" stair treads prevent slippage, etc. the set of rear casters remain in good working condition. exact fabricator unknown. measures 42 x 20 x 30 inches.