This watch is also known as:
5040G-018 , 5040G/WG/White .
Movement: mechanical with automatic winding, Patek Philippe Caliber 240 Q; 27 jewels, 21,600 vph; unidirectional winding microrotor in 22 karat gold, gyromax balance, flat hairspring, Kif shock protection; 275 individual parts; power reserve approx. 46 hours. Beveled and Cotes de Geneve finished. Hallmarked with the Geneva Seal. Functions: hours, minutes, 24 hours; perpetual calendar (date, day, month, leap year, moon phases). Case: in 18 karat white gold, tonneau-shaped; 41 x 35 x 8.5mm (incl. lugs, excl. crown); 4 correctors on case band; sapphire crystal; white gold crown with logo; provided with 2 snap-on case backs, one closed and one with a sapphire exhibition window. Water-resistant to 25 meters.