b'3281GRAVITY Clock in oak case, England, circa 1900,when the movement is elevated a tooth rack on one of the columns is engaged and the movements own weight will drive the clock for 24 hours,35cm high$40060082GRAVITY Wall clock with enamel dial, circa 1919,this type of clock was originally used in the mid 18th century.The movement is wound by raising the clock up the rack and allowing its own weight to drive the mechanism,61cm high$400600 8184'