Observatory Chronometer A large observatory chronometer from a small series of 88...

Gehäuse
Base metal, chrome-plated, glazed back.|Very good.

Zifferblatt
Enamel.|Very good.

Werk
1/2 plate movement, 24mm Guillaume gold screw compensation balance, blued balance spring with both sides passing.|Very good, capable of running, cleaning recommended.

WERKNR:7049454

caliber:60.8

dimension:75 mm

circa:1930

weight:335

country:Switzerland

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The Omega chronometer 60.8 mm was intended for precision contests only. This very large caliber produced results which where hardly better than those of caliber 47.7 mm. The observatory caliber which had been constructed taking into account all known findings and experiences shows some remarkable features even without. Only 88 pieces with the caliber 60.8 were produced between 1925 and 1930.Source: "Omega" 2007 by Marco Richon, page 174.This timepiece participated in the 1932 and 1933 chronometer trials at the Neuchâtel Observatory - accompanied by a Bulletin de Marche from the Observatoire Astronomique et Chronométrique de Neuchâtel and two extracts from the chronometer database compiled by Andreas Hiddings.This Omega chronometer movement took part in the 1932 Neuchâtel Observatory competition in the category “Chronomètres de Poche 1re Classe – 1er Prix”. With an average daily rate deviation of 0.18 seconds, it achieved a score of 8.0 points, placing 37th out of 54 chronometers in the class “Chronomètres de Poche 1re Classe – Diamètre supérieur à 45 mm”.In the following year, 1933, the movement competed again at Neuchâtel, this time in the category “Chronomètres de Bord – IIIme Prix”. It achieved N = 8.76 points, placing 8th out of 8 chronometers in the class “Chronomètres de Bord – Diamètre supérieur à 60 mm”. The régleur for both competitions was Gottlob Ith of Biel/Bienne.