cal. 28-255 nickel lever movement stamped with the seal of Geneva free-sprung Gyromax balance adjusted to heat cold isochronism and 5 positions • brushed Vermeer gold dial engraved Roman and baton numerals • 18k gold elliptical case enlarged stepped bezel with brushed center hidden t-lugs • case dial and movement signed  • with an 18k gold Patek Philippe buckle