Patek Philippe & Cie, Genève, No. 863196, case No. 508475, Ref. 1518, produced in very few examples in stainless steel. Extremely fine and very rare astronomie, stainless steel gentleman's wristwatch with square button chronograph, register, tachometer, perpetual calendar and moon phases, with certificate. | Important Collectors Wristwatches Pocket Watches & Clocks | Geneva, Hotel Des Bergues, 21st October 1995

Important Collectors Wristwatches Po...

Geneva, Hotel Des Bergues, Oct 21, 1995

LOT 914

Patek Philippe & Cie, Genève, No. 863196, case No. 508475, Ref. 1518, produced in very few examples in stainless steel. Extremely fine and very rare astronomie, stainless steel gentleman's wristwatch with square button chronograph, register, tachometer, perpetual calendar and moon phases, with certificate.

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C. polished, satined. D. mat silver with applied steel Arabic numerals + auxiliary seconds and 30 minutes register dials, outer tachometer graduation, graduation for the days of the month, apertures for the days of the week, the months and the lunations. "Feuille" steel hands. M. 13 "' Q rhodiumed, "fausses côtes" decoration, 23 jewels, lever escapement, cut bimetallic balance adjusted to 8 positions, Breguet balance-spring, micrometer regulator. Dial, case and movement signed. In excellent condition.

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The square button chronographs with perpetual calendar by Patek Philippe were among "the must" of their technology and were usually cased in yellow or pink gold. Made on special order, only two examples in stainless steel are known to-date. A similar watch is published in "Collezionare Orologi Patek Philippe" by M. and O. Patrizzi, p. 247.