Audemars Piguet

damascened nickel lever movement, 40 jewels, free-sprung gyromax balance, adjusted to heat, cold, isochronism and 5 positions, finely pierced and engraved rotor to form AP, 21k gold rimmed rotor, silvered dial engraved with the lines of longitude and latitude, three subsidiary dials displaying day, date and month combined with leap year indication, a further revolving subsidiary dial calibrated for time indication in 24 world locations, circular satin finished case, polished chamfered bezel, pusher below 4 to adjust world-time indication, screwed-down sapphire crystal display back, case, dial and movement signed, with a platinum Audemars Piguet folding buckle.