Even the casters are original and in good working order. Photos were taken before the stool was professionally cleaned . The size doesn't fit the template on this site so this will say it best ; Seat is 15 x 10 - Backrest is 10 x 5 - Seat is 31 from floor and Backrest is 41 from the floor - Not many of these have survived with all of their original elements  intact so I invite you into my shop to have a spin on the seat and test it's comfort for yourself.