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Lot no. 2860
Rolex, extremely rare KEW-A Observatory Chronometer, 1950s Yellow gold 750. D 35 mm. Reference No.: 6210 Observatory Chronometer (1 of 24 produced) Case No.: 97457, three-part Oyster case with screw-down case back and screw-down crown Dial: Silver-plated dial with applied indices, small second and signed: Rolex Oyster Observatory Chronometer “Kew A” Certificate Movement: Hand-wound No. 4160, signed: Rolex KEW *A* TESTED, the movement was modernized at a later date and fitted with a new balance and a new balance cock. Originally, this watch had a Guillaume compensation balance with a polished steel balance cock Band: Bucherer gold bracelet with fold-over clasp / leather band with gold-plated tang buckle Accessories: None The watch on offer is one of an extremely small series of only 24 examples of the Reference 6210, all equipped with observatory movements and an 18-carat gold case, making it one of the rarest and most accurate models Rolex has ever produced. The KEW Observatory test in Teddington, near London, was extremely rigorous and lasted 45 days (compared to 15 days for Swiss chronometer tests). It was carried out at different temperatures and in different positions. The results had to show a deviation of less than 1 second per day. Rolex made a special effort to achieve these results, and the watches were manufactured specifically for the tests. The base movement is the caliber 700. Only four reference 6210 watches have ever been offered at auction. The rarity of this lot is enhanced by the excellent original condition of the dial. ------------------------------------------------- Rolex, extrem seltener KEW-A Observatoriums-Chronometer, 1950er Jahre Gelbgold 750. D 35 mm. Referenz Nr: 6210 Observatory Chronometer (1 von 24 produzierten Modellen) Gehδuse: 97457, dreiteiliges Oyster-Gehδuse mit verschraubtem Gehδuseboden und verschraubter Krone Zifferblatt: Versilbert mit applizierten Indizes, kleine Sekunde und signiert: Rolex Oyster Observatory Chronometer "Kew A" Certificate Uhrwerk: Handaufzug Nr. 4160, signiert: Rolex KEW *A* TESTED, das Uhrwerk wurde zu einem spδteren Zeitpunkt modernisiert und mit einer neuen Unruh und neuem Unruhkloben ausgestattet. Ursprόnglich hatte diese Uhr eine Guillaume Kompensationsunruh mit poliertem Stahl Unruhkloben Band: Bucherer Goldband mit Faltschliesse / Lederband mit vergoldeter Stiftschliesse Accessoires: Keine Die vorliegende Uhr gehφrt zu einer δuίerst kleinen Serie von nur 24 Modellen der Referenz 6210, die alle mit Observatoriums-Werken ausgestattet sind und ein Gehδuse aus 18-karδtigem Gold haben, was sie zu einem der seltensten und genauesten Modelle macht, die Rolex je hergestellt hat. Der KEW-Observatoriums-Test in Teddington bei London war δusserst streng und dauerte 45 Tage (wδhrend Schweizer Chronometer-Tests 15 Tage dauerten). Es wurde bei unterschiedlichen Temperaturen und Lagen kontrolliert. Die Gangergebnisse sollten unter 1 Sekunde Gangabweichung pro Tag liegen. Rolex hat besondere Anstrengungen unternommen, um diese Ergebnisse zu erzielen, und die Uhren wurden speziell fόr die Tests hergestellt. Mit einem Basiswerk des Kalibers 700. Erst 4 Referenz 6210 sind jemals auf Auktionen angeboten worden. Die Seltenheit dieses Lots wird durch ihren hervorragenden, originalen Zustand des Zifferblattes verstδrkt.
Pictures credits: Contact organization
Watches and clocks
About the sale
Catalog
Watches
8031 Zürich - Switzerland
06/24/2025
Offered by Koller Auctions
+41 44 445 63 63

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