Details
CIRCA: 1992
CASE MATERIAL: Yellow gold
CASE DIAMETER: 40 mm.
DIAL: Blue dial with fixed centre representing the sun, rotating concentric rings representing Saturn, Jupiter, Mars, Venus, Mercury, fixed ring for the Earth and Moon, all within a rotating gold ring with months of the year and signs of the Zodiac
MOVEMENT: Automatic
FUNCTIONS: Planetarium
CLASP: Yellow gold Ulysse Nardin buckle
BOX: No
PAPERS: Yes
WITH: Certificate dated 1992, product literature, leather folder and pouch

This lot includes a strap made from an endangered species material, which cannot be shipped outside of Switzerland. If shipped internationally, the watch will be supplied without a strap. However, the strap may be collected from the sales office in Geneva within six months of the sale. For more information, please contact a specialist.
Brought to you by
Remi GuilleminHead of Watches, Europe and Americas
A Christie's specialist may contact you to discuss this lot or to notify you if the condition changes prior to the sale.

Lot Essay

The Planetarium Copernicus model by Ulysse Nardin combines both Ptolemy's geocentric universe with the Earth at its center and Nicolas Copernicus' heliocentric universe with the Sun at its center and makes it possible to define astronomically the exact astrological position of the planets in our solar system. As the planets circle the Sun, the wearer can also see the angles at which they face each other when viewed from the Earth. The five rings with the planets turn in relation to the Planetarium's fixed Earth. Mercury and Venus turn counter-clockwise, and Mars, Jupiter and Saturn turn clockwise. The Moon orbits the Earth in 29.53 days, which is the exact time between full moons. The outermost ring with months and the signs of the zodiac rotates clockwise and makes a complete revolution in a true year, 365 days, 5 hours, 48 minutes and 46 seconds, so no corrections are needed for leap years. This timepiece is part of Ulysse Nardin's Astronomical Trilogy, which consists of the Astrolabium Galileo Galilei (lot 325), the Planetarium Copernicus (lot 324), and the Tellurium Johannes Kepler (lot 323) models.

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