cal. 1735 automatic engraved gilt lever movement 44 jewels one minute tourbillon carriage with three polished steel arms minute repeating on two gongs • white dial applied Roman and painted Arabic numeral feuille hands and luminous chronograph hands subsidiary dials for month combined with leap year date combined with 30-minute register day fan-form aperture for moon-phases outer minute and  1/5 second divisions • platinum polished case stepped bezel two chronograph buttons and minute repeating slide in the band snap-on sapphire crystal back • case dial and movement signed • with a platinum Blancpain folding clasp