PATEK PHILIPPE REF. 1578 YELLOW GOLD Patek Philippe, GenËve, No. 701322, case No. 668839, Ref. 1578. Made in 1954. Very fine, center seconds, 18K yellow gold wristwatch. Three-body, solid, polished, inclined bezel, lapidated lugs, snap-on case back. Satine silver with applied yellow gold dart indexes and Arabic quarters, outer 1/5th seconds track with 5-second Arabic markers. Yellow gold feuille hands. Cal. 27SC, stamped with the seal of Geneva quality mark, rhodium-plated, fausses cÙtes decoration, 18 jewels, straight-line lever escapement, monometallic balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, self-compensating Breguet balance-spring, swan-neck micrometer regulator.