Brand Patek Philippe, Geneva
Model ‘Double Complication’
Year circa 1962
Reference 839
Movement No. 47 634 (1874)
Calibre 19’’’ RM QP, manual-winding, probably 23 jewels
Case No. 312 006 (by Antoine Gerlach, Geneva)
Material/s yellow gold (18-carat)
Dimensions Ø 53.8mm.
Thickness 16.9mm
Weight 172.3gr. (approx.)
Signature dial, case and movement
Accessories Extract from the Archives Patek Philippe
Ref. 839, pocket watch, hunting-case, perpetual calendar, moon phases, silver dial, Roman numerals;; yellow gold (18-carat) --
The only one known Ref. 839, a one-of-a-kind minute-repeater and perpetual calendar pocket watch --
Yellow gold (18-carat), hunting-case, keyless-winding, round-shaped, pocket watch, with subsidiary seconds at 6 o’clock and six horological complications:
• Minute-repeater by two hammers on two steel gongs (rings on demand, ‘repeating at will’, hours, quarters and minutes elapsed; activated by the slide at 5:30)
• perpetual calendar
• Date of the month (subsidiary dial at 6 o’clock)
• Day of the week (subsidiary dial at 9 o’clock; indications given in French)
• Month of the year (subsidiary dial at 3 o’clock; indications given in French)
• Age and phases of the moon (subsidiary dial, graduated from 0 to 29 ½, and aperture at 12 o’clock) Winding and time-setting by the crown on the pendant. --
Case: four-piece ‘variée carrure plate’, polished and satin-finished; stepped rectangular-shaped screwed bow. Dial: gold, silvered colour, with black painted radiating Roman numerals; ‘fancy’ uneven external minute track divided five by five with black painted radiating lines; blued steel ‘Feuille leaf-shaped hands. Movement: calibre 19’’’ RM QP, manual-winding, probably 23 jewels, gilded brass, going barrel, straight-line equilibrated lever escapement, à moustaches, cut bimetallic compensated balance with gold poising screws, blued steel hairspring with terminal curve, polished steel index-regulator; repeater work on the main plate, under the dial; calendar work on the main plate, under the dial. --
The Extract from the Archives mentions that the watch was made in 1874 and sold on July 19, 1875. It was re-cased on special request in 1962.
