Swiss 18K gold engine turned lever pocket watch Circa 1850

Gold open faced keywinding watch
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A Swiss 18 carat yellow gold open faced keywinding pocket watch, made by Breitling Laederich in La Chaux-de-Fonds, circa 1850. An engine turned case back with, in the center a circle, engine turned case band with a gilded metal cuvette. The case is made by A. B. L. Gilded metal dial with, in the center a fine cut engraving, radial Roman numerals, outer minute track, subsidiary seconds at 6 and blued steel Spade hands.
A gilt brass movement, going barrel, detached lateral equilibrated lever escapement, blued steel index regulator. Signature on the cuvette.
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Diameter: 50 mm
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Weight: 87 g
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Signed: Breitling Laederich, La Chaux-de-Fonds
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Charles Auguste Breitling was the son of Jacob Martin Breitling or Jacques Martin Breitling, a baker in La Chaux-de-Fonds. The Breitling family originally came from Gechingen in Baden-Württemberg. Jacob Martin was the grandfather of Léon Breitling. Charles Auguste was also an uncle of Léon Charles Auguste, born on October 17, 1810. His mother was Catherine Laederich. He married Frédérique Laederich (1811-?) on July 9, 1838. Frédérique was possibly family from his mother. From this marriage, a daughter, Cécile Breitling, was born in 1846. Charles Auguste founded a watch shop in Le Locle around 1840 called Breitling-Laederich. Some surviving watches are also engraved with Breitling-Laederich, La Chaux-de-Fonds. He exported many watches to America. Charles Auguste Breitling’s date of death is not known.