Swiss 18K rose gold cylinder watch with full calendar Circa 1900

Rose gold complicated watch by Haas
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A Swiss 18 carat rose gold open faced pocket watch with a full calendar, circa 1900. Bridge movement, cylinder escapement, gold ring balance. White enamel dial with Roman hours, outer minute divisions, at 12 o’clock a subsidiary dial for the months combined with phases of the moon, the days at 3, the date at 9 and auxiliary seconds at 6. Plain case. Cuvette signed, case numbered.
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Diameter: 48 mm
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Weight: 83 g
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Signed: Maison B. Haas Jeune
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Haas. The house founded in Geneva in 1848 by the brothers Léopold Haas (1827-1915) and Benjamin Haas (1828-1925) is one of the oldest Swiss watch manufacturers. Later renamed Ancienne Maison B. Haas Jeune, then Haas Neveux & Co. The Haas signature has always been one of the most sought-after, thanks to the impeccable standards of the company. They gained a reputation as a manufacturer of fine chronometers, chronographs and highly complicated watches. Among their most notable creations was the ‘remontoir perpétuel à décrochement’ (perpetual winding crown) in 1867 and 1873, a perpetual calendar in 1872 and later the first ultra-thin watch movement in circa 1896.