Swiss carved agate Renaissance verge pendant watch Circa 1670

Carved agate watch ornamented with gold and enamel
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A very rare Swiss 18K gold and carved agate one-handed and pre-balance spring Renaissance pendant watch, circa 1670.
Agate case ornamented with gold and enamel, raised enamel decoration on the bezels, large lateral hinge. White enamel chapter ring with radial Roman hours, engine turned and translucent red enamelled centre, single iron hand. Gilt full plate movement, key-winding, gut/fusee, baluster movement pillars, ratchet wheel set up with blued steel spring, verge escapement, two-armed blued steel balance without balance spring, fine florally engraved and pierced balance cock. Signed movement.
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Diameter: 31 mm
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Weight: 27 g
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Signed: Pierre Urbain Dufour Genève
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The Swiss watchmaker Pierre Urbain Dufour was born on February 27, 1643, in Geneva as a son of watchmaker Abraham Dufour and his wife Michée Le Maistre. Pierre Urbain married Madeleine de La Rue in Geneva in 1668. Madeleine‘s parents were active in local politics. Pierre and Madeleine had five children but two of them died at a very young age. Their son Jean Antoine Dufour became a watchmaker too and married Judith Gentil (1671-1725), a sister of Catherine Gentil who became the wife of Bernard Dominicé. Pierre Urbain Dufour died in 1690 at the age of 47.