This is an Eames Aluminum Group Executive Desk Chair, Model EA337, originally designed by Charles and Ray Eames in 1958. These particular examples were produced by Herman Miller and date to 2015. The design includes a solid yet lightweight aluminum frame, and the upholstery is done in black leather. The chairs offer a tilt feature with locking capability, a full 360-degree swivel, and a pneumatic lift mechanism. The listed price includes one chair and there are more than 12 available to purchase. Each chair measures 23 inches deep, 22.5 inches wide, and 39.5 inches high, with a seat height of 16.5 inches. The chairs do show wear consistent with previous use. There are minor scuffs and scratches on the frame and base, as well as light creasing in the leather. Overall these pieces are in good to very good condition. Please see photos.