jewelled lever movement, mono-metallic balance ¿  mother-of-pearl dial with engine-turned centre, chapter ring with Roman numerals, outer chapter ring calibrated for minutes and with applied diamond hour markers, aperture for date ¿  18k gold polished case with milled coin edged band, bezel set with rubies, diamond set lugs, enlarged domed crown with Breguet signature, screwed down case back ¿  case, dial and movement signed ¿  with an 18k gold and diamond set Breguet folding clasp