School desk model, no patent tags or number are evident so this may be a salesman's sample. The seat folds up to back rest. Slatted horizontal wood. Slats alternate between light and dark colored wood. Metal legs, hinges and support frame. The desk portion is behind bench back rest so these would have been lined up in rows in a classroom. A shelf is underneath desk top for storage. The legs have feet and holes to mount to a platform. Pivot piece is metal as are the legs.