PATEK PHILIPPE REF. 725, "AMERICAN"
DIGITAL PERPETUAL CALENDAR YELLOW GOLD
Patek Philippe, Genève, movement No. 931968, case No. 332417. Ref. 725/4. Made in
1979, sold on October 9th, 1979.
Extremely fine and very rare, 18K yellow gold, keyless dress watch with linear digital
perpetual calendar and moon phases. Accompanied by the Extract from the Archives
and a Patek Philippe service invoice in the amount of CHF 2'160.
Three-body, "moderne" with concave bezel, polished and brushed, correctors on the
flat band, inverted U-shaped bow.
Brushed silver, applied yellow gold faceted baton indexes, outer minute divisions,
aperture for the digital display of days of the week, months and date, aperture at 6 for
phases of the moon concentric with subsidiary seconds. Yellow gold dauphine hands.
Cal. 17``` 170, rhodium-plated, fausses cotes decoration, 18 jewels, straight-line
lever escapement, movement stamped twice with Geneva hallmark, cut bimetallic
compensation balance adjusted to heat, cold, isochronism and five positions, self-compensating
blued steel Breguet balance spring, swan-neck micrometric regulator.