Swiss rare gold Omega observatory chronometer Circa 1910

Gold open faced watch by Omega
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An extremely rare Omega gold marksman watch, limited observatory chronometer, Eidgenössisches Schützenfest Bern, circa 1910. Extremely rare 2-coloured gold case, pink gold/ yellow gold, 18K, back with Art Nouveau relief Bern 1910, dome inscribed: Eidgenössisches Schützenfest Bern 1910, case number 4439884, Omega precision lever movement in very rare chronometer quality with special fine adjusting device and screwed gold chatons, calibre 19-LOD (observatory chronometer), perfectly preserved enamel dial, pink gold hands, in very good condition (only the bow with signs of use), in working order, comes in a high-quality old watch box, signed Levi Paris. The calibre LOD, as used in this watch, is a chronometer calibre.
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Diameter: 50 mm
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Weight: 101 g
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Signed: Omega Chronometre
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Omega delivered 180 watches for the Federal Shooting Exhibition in Bern in 1910. An identical watch can be found in the Omega Museum, auctioned at the “OMEGAMANIA” auction in Geneva in 2007 and was sold for more than 7,000 Swiss Francs.