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OMEGA Observatory Chronometer, Cal. 30 DP

CHF 6,000

Sold

Rare and well-preserved fine OMEGA Observatory Competition chronometer SN. 9378514, Cal. 30mm DP (Guillaume balance, higher frequency 25200 A/h) in its original testing housing. Made late 1940s excessively for Observatory Competitions, that particular piece scored 9! (1948, 1958, 1959, 1960, 1961, 1962, 1963, 1966 and 1967 years) successful participation at the observatory competitions in Geneva & Neuchâtel. Including being part of the so called series-record in 1958 were it placed 5 out of 79 successful entries in Geneva, also got “1er prix” in Neuchâtel Observatory in 1962 and “Primes” in 1966 and 1967 years.

Original certificates “Bulletin de Marche” are no longer available, but could be ordered directly from Geneva Observatory (Neuchâtel can’t provide extracts anymore) or alternatively from A. Hidding’s website, who has a copy of all trials records.

C. circular outer case, all set within an aluminium observatory testing box. D. White enamel dial, Breguet numerals, subsidiary seconds, steel blued hands. M. Cal. 30mm DP nickel-finished jewelled lever movement, Guillaume balance with gold poising screws, oversized barrel, 25,200 A/h.

Up until 1967, the exact length of a second was determined by the Earth’s motion around the sun, and the Neuchatel observatory’s precise optics allowed the fine measurements necessary for precise timesetting to be made. Because of this, Neuchatel began to host observatory chronometer trials – a series of the most stringent, thorough accuracy tests in the history of mechanical watchmaking. The trials, held over a period of forty-five days, encompassed ten separate movement timekeeping tests in five different positions and two temperatures. These observatory trials quickly outgrew their roots as a simple certification test, and before long the trials at Neuchatel were a competitive battleground for the finest watchmakers in Europe. Names like Longines, Zenith, Peseux, Omega and many more traded records for decades, fighting to produce the most accurate movement possible. These movements were never intended for regular use, and bore little to no resemblance to what these companies offered their consumers. Along with the technical prowess of the watchmakers building the movements, in the “racing team” there were specialists, the “regleurs de precision”, who worked tweaking a number of movements until they could find a few of them to bring to the Observatory Competitions. By means of fine adjustments, replacement of key parts, use of special lubricants, they could create a few movements for the Competitions. And often they were the same movements for many years.

Watch is in overall great condition, running and ready to use!

PLAIN FACTS

Brand Omega
Model Observatory Competition Chronometer
Reference
Year 1948
Movement Hand-winding
Calibre Omega Cal. 30 DP, f 25,200 A/h
Case material Steel & Aluminium
Case size 50 x 45 x 24 mm
Bracelet
Features chronometer
Box/Papers original testing housing

CONDITION REPORT

In fully working order. Very good, almost mint condition, minor surface scratches, scuffs and discolorations through the age. Original aluminium testing case.

Watches are sold as-is, and there is no guarantee of to be waterproof or movement accuracy, due to the nature of vintage watches. Please view all the pictures carefully as they form an integral part of the description. Any defects not mentioned but visible in the pictures will be considered as described.

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