Ca. Ø50mm, ca. 97g, 18K gold, 2-coloured yellow gold/pink gold, case number 3850023, movement number 1556840, top calibre, chronometer quality, 1st class observatory chronometer, fine adjusting device, screwed gold chatons, perfectly preserved enamel dial, pink gold hands, matching 18K pink gold watch chain, ca. 46 cm long, very high quality original mahogany box with mother-of-pearl inlay, inside marked Eidgenössisches Schützenfest Bern 1910 Omega. The watch comes with the original chronometer papers from 1910. The watch is in an absolutely fantastic, almost unused condition and is an absolute rarity in the gold observatory chronometer version. Only 280 of these chronometers in the gold marksman's case were produced!