Universal Geneve, "Golden Equation of Time", series of 2 unique pieces, produced in 1995. Extremely fine, waterproof at 5 atmospheres, 18K pink gold, automatic gentleman's wristwatch, with date, three hands and equation of time and stainless steel deployant clasp, with fitted box and certificate. | Important Watches, Wristwatches and Clocks & Ulysse Nardin Jubilee | Geneva, Hotel Des Bergues, 12th October 1996

Important Watches, Wristwatches and C...

Geneva, Hotel Des Bergues, Oct 12, 1996

LOT 441

Universal Geneve, "Golden Equation of Time", series of 2 unique pieces, produced in 1995. Extremely fine, waterproof at 5 atmospheres, 18K pink gold, automatic gentleman's wristwatch, with date, three hands and equation of time and stainless steel deployant clasp, with fitted box and certificate.

CHF 35,000 - 40,000

C. massive, polished, satined. D. mat silver with applied gold indexes + auxiliary dials for the day of the month and the month, graduation from 0 to 15 right and left for the equation of time. M. Cal. UG 90, rhodiumed, 23 jewels, lever escapement, Glucidur balance adjusted to 3 positions, Incabloc system, self-compensating flat balance-spring, gold rotor. Dial, case and movement signed. In mint condition Diam. 38 mm.

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Golden Equation of time The third hand, at the centre of the movement, shows the value of the difference between the average sun time (civil ti me) and the real sun time, calculated by the Calibre UG 90. The value of the sun equation changes every day of the year. The smallest time lag (+4 minutes and 16 seconds) is observed on the 11 of February and the 4th of November (-16 minutes and 24 seconds). Four times a year, the time equation is nil, and this means that the average sun time and the real sun time coincide. These days are the 16th of April, the 9th of June, the 2nd of September and the 25th of December.