An early 20th Century English lever chronograph in a gold open face case. Gilt three quarter plate keyless movement with going barrel. Plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. English table roller lever escapement . White enamel dial with centre seconds, Roman numerals, blue steel seconds hand, gilt hands. Plain 18 carat open face case made in one piece, the movement hinging out. Small gold slide in the band to stop the watch acting on the balance, maker's mark “BB” in a rectangle and number corresponding to that on the movement.