Swiss gold chronometer with pivoted detent escapement Circa 1850

Gold hunter with a coat of arms
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Extremely fine and rare, large and heavy, Swiss 18K gold, hunting cased pocket chronometer with pivoted detent escapement, circa 1850. Calendar and dial with a painted-on enamel portrait of Queen Marie of Bavaria (1825-1889) after Joseph Karl Stieler, the case with the coat of arms of King Maximillian II of Bavaria (1811-1864). Engine-turned covers, the front with applied varicoloured gold high-relief coat of arms of King Maximillian III of Bavaria. Hinged gold cuvette with engine-turned border. White enamel dial with radial Roman numerals, outer minute track, subsidiary seconds and date dials, finely painted on enamel portrait of Queen Marie of Bavaria set at 9.
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Gold and blued steel flower hands. A rhodium-plated movement, Geneva striping and oeil-de-perdrix decoration, 12 jewels, the detent and escape wheels with screwed gold chatons, large going barrel, gold wheel train, Earnshaw-type pivoted spring detent escapement, cut bimetallic compensation balance with gold and platinum meantime and temperature adjustment screws, blued steel helical balance spring with inner and outer terminal curves, diamond endstone, index regulator. Cuvette and movement signed.
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Diameter: 56 mm
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Signed: Ami Sandoz & Fils  LeLocle
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It is likely that this watch was commissioned and given by Queen Marie to her husband King Maximillian II. Marie was the daughter of Prince Wilhelm of Prussia, she married Maximillian in 1842 and was the mother of Kings Ludwig II and Otto of Bavaria. The present watch is a very high-quality precision chronometer with pivoted detent chronometer escapement, helical balance spring and gold wheel train. The case and dial are of equally high quality.