54-jewel automatic movement adjusted to heat cold isochronism and 5 positions 21ct gold rotor black dial with applied alternate Arabic numeral and dagger hour markers outer 5 minute divisions subsidiary dials for running seconds and 30 minute recording brushed and polished case with twin pushers flanking the crown and back held by 5 screws down turned lugs fitted makers leather strap and folding clasp case dial and movement signed 37mm.