Exeptional French gold, silver and enamel pendant watch Circa 1850

Gold watch with matching chatelaine
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An exceptionally fine and rare French, varicoloured 18 carat gold, silver and painted-on enamel, keyless pendant watch, circa 1850. With a matching chatelaine, key and fob with a lapis-lazuli matrix. Made for a member of the House of Habsburg-Lorraine. The bezel with engraved repeated laurel leaf decoration, engine-turned back applied with high-relief chased varicoloured gold scrolls and flowers. The centre with painted-on enamel shield of the Hbsburg-Lorraine arms flanked by silver putti and a hinged gold cuvette.
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Chatelaine: extremely finely chased with varicoloured scrolls and articulated flower swags, the watch support with two silver billing doves, lapis-lazuli seal fob with a silver cherub holding a flower garland, matching key, three silver winged putti above holding the painted-on enamel Habsburg-Lorraine arms, surmounted by a jewelled ducal coronet. White enamel dial with radial Roman numerals, outer minute track and outermost large red Arabic five-minute numerals and pierced gold hands. Matte gilt movement, wolf’s tooth winding, eight jewels, cylinder escapement, three-arm gilt balance, flat balance spring, index regulator. Dial and cuvette signed.
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Diameter: 33 mm
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Signed: Otterbourg  Paris
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Of the very highest quality, a tour de force of the goldsmith’s art, the chatelaine, in particular, is exquisitely made in multicoloured gold with individually articulated flower swags and drapery. The ducal coronet and arms of Habsburg-Lorraine are held aloft by three winged cherubs on again superbly chased foliate scrolls and flowers. Although unconfirmed, the most likely owner of this piece was Princess Anna of Saxony, Hereditary Grand Duchess of Tuscany (1836-1859) who was the wife of Ferdinand, Hereditary Grand Duke of Tuscany. It was perhaps a wedding gift on the occasion of their marriage in 1856.