Swiss gold First Class Bulletin chronomètre watch Circa 1930

Gold lever chronomètre by Ulysse Nardin
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A Swiss gold ‘First Class Bulletin’ keyless wind pocket watch by Ulysse Nardin, circa 1930. Retailed by Türler. Nickel finish 21 jewels Swiss lever movement, cut and compensated bimetallic balance, adjusted to 8 positions. White enamel dial, black Arabic numerals, black outer minute track, blued steel spade hands and subsidiary seconds at 6. 18 Carat polished hinged open face case, inner case back engraved Leom Hermann, cuvette engraved Bulletin 1ere Classe del’Observatoire Astronomique de Neuchatel.
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Diameter: 52 mm
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Signed: Chronomètre Ulysse Nardin Locle et Genève Türler Zürich