156 - Omega - Observatory Chronometer

Omega - Observatory Chronometer (*) A large observatory chronometer from a small series of 88 pieces, which were intended solely for precision competitions. Includes a certified copy of the original *Bulletin de Marche de l'Observatoire Astronomique et Chronométrique de Neuchâtel*, dated May 15, 1930 Movm. No. 6999766, Cal. 60.8, Dimensions 74 mm, circa 1930, Weight 318 g, Origin Switzerland, Accessories Case: Brass, chrome-plated, glazed screw-down back. Dial: Enamel. Movement: 1/2-plate movement, 24 mm Guillaume gold-screw compensation balance, blued balance spring with terminal curve by Philipps. The Omega 60.8 mm chronometer was intended solely for precision competitions. This very large caliber produced results that were better than those of the 47.7 mm caliber. The observatory caliber, which had been designed taking into account all known findings and experiences, exhibits some remarkable features even without them. Only 88 pieces featuring the 60.8 caliber were produced between 1925 and 1930. Source: “Omega” 2007 by Marco Richon, page 174. In 1930, this Omega chronometer movement participated in the Neuchâtel Observatory’s “Chronomètres de Bord” chronometer competition, achieving the outstanding result of an average daily rate deviation of 0.11 seconds. The regulator was Gottlob Ith in Biel. Case: very good. Dial: very good. Movement: very good, in working order, cleaning recommended.