Forget No.A040: A steel automatic chronometer calendar and moonphase chronograph wristwatch in drum shaped case, with hinged bar lugs, silvered engine turned dial with Roman numerals, outer date ring, subsidiary dials for running seconds, elapsed minutes and hours, and sector for phases of the moon, sweep centre seconds operated by two buttons in the band, the signed movement visible through the back, with detachable flexible steel bracelet, with spare links