Swiss 18K gold two-time zone chronometer with date Circa 1860

Gold chronometer made for the Islamic market by Lebet & Fils
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A very fine and extremely rare Swiss 18 carat gold hunting cased two-train two-time zone keyless pocket chronometer with date made for the Islamic market, circa 1860. Frosted gilt movement, 18 jewels, two-train with separate winding, pivoted detent escapement cut bimetallic compensation balance with gold screws, blued steel Breguet balance spring with overcoil, index regulator. Gold hinged cuvette engraved with the technical details within an engine-turned border. Gold engraved dial with flowers, two meantime dials, one with Roman numerals and outer minute divisions, the other with Islamic numerals and outer minute divisions, subsidiary seconds and date, original blued steel Breguet hands. Engine-turned case with polished borders, reeded band. Cuvette signed.
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Diameter: 52 mm
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Signed: Lebet & Fils Buttes