Important Modern & Vintage Timepieces

Geneva, May 12, 2019

LOT 601


CHF 2,500 - 4,500

HKD 20,000 - 36,000 / USD 2,500 - 4,500

Sold: CHF 4,375

Rare competition chronometer wristwatch movement with Guillaume balance and enamel Breguet dial, subsidiary seconds, for use in observatory trials. Aluminum testing case. With a copy of the bulletin de l’observatoire de Geneve in 1966

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Grading System
Grade: AAA


Case: 3


Dial: 3-01


HANDS Original

Brand Omega

Model Observatory trials

Year Circa 1953

Movement No. 9’598’330

Calibre  30T2

Case No. 99

Dimensions 50X45 mm

Signature Dial and Movement, Movement double numbered, Case numbered.

Accessories Extract from “Observatoire de Genève”


This particular movement went 2 times at the Geneva observatory in 1953 and 1966. The caliber 30T2 is one of the best manual wind movements produced. It is a simple design that won many of the observatory competitions year after year. The production of the caliber 30 mm designed by Henri Kneuss started in 1938 and ended in 1963