Swiss rare pocket watch with one minute tourbillon Circa 1890

Gold open faced pocket watch by Charles Henry Grosclaude & Cie
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An extremely rare, very fine Swiss gentleman’s pocket watch with one minute tourbillon and pivoted detent escapement, circa 1890. 4/5 Plate movement, frosted, gilt, signed, tourbillon with one minute rotation time, glazed movement, finest mirror polished tourbillon steel cage, gold screwed compensation balance. White enamel dial with Arabic numerals, auxiliary seconds and blued spade hands. 18 carat gold, tiered, polished, à goutte case.
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Diameter: 52 mm
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Weight: 109 g
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Signed: Charles Henry Grosclaude & Cie Fleurier
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Charles-Henri Grosclaude Grosclaude was born on May 16, 1814 in Les Planchettes, Neuchatel. He founded the company Ch. Hr. Grosclaude together with Charles-Théodor Vaucher on August 15, 1850. The company was later renamed to Ch. Hr. Grosclaude & Fils. Grosclaude married Henriette Calame in 1834, she was probably the daughter of Charles Frederick Calame. The couple had 10 children.