Lot 67
  • 67

GEORGE MARGETTS, LONDON | AN IMPORTANT GOLD AND ENAMEL PAIR CASED CYLINDER WATCH WITH TIDAL DIAL, ANNUAL CALENDAR AND ASTRONOMICAL INDICATIONS, THE OUTER CASE BACK WITH ENAMEL PANEL PAINTED EN GRISAILLE1778, NO.1

Estimate
130,000 - 220,000 GBP
Sold
615,000 GBP
bidding is closed

Description

  • George Margetts, London
  • AN IMPORTANT GOLD AND ENAMEL PAIR CASED CYLINDER WATCH WITH TIDAL DIAL, ANNUAL CALENDAR AND ASTRONOMICAL INDICATIONS, THE OUTER CASE BACK WITH ENAMEL PANEL PAINTED EN GRISAILLE1778, NO.1
• Movement: gilded full plate, steel cylinder escapement, decoratively pierced and engraved balance cock with an eagle at the neck, silver regulator plate, diamond endstone, fusee and chain, movement signed and numbered Geo. Margetts, London, 1• Dial: astronomical dial with white enamel ground, 16 gear train for dial indications advancing clockwise (except fixed mean time dial with Roman numerals, gold north indicator and two gold parallel parabolas) tidal dial indicating tides at eight English ports: Portsmouth, London, Hull, Yarmouth, Dover, Downs (a safe anchorage point in the English Channel), Plymouth and Dublin, the fixed moon hand indicating on the gold rim with four spokes the latitude of the planet together with its position in the Zodiac and declination in degrees on the nearest calibration of the main dial, one spoke to rim engraved with a dragon whose extended tail points to sign and degree of Zodiac marked on the middle calibration, dial edge with annual calendar read against sun hand which also indicates sun’s declination and position in the Zodiac, observer’s horizon indicated by tangential parabola, space between it and inner parabola is astronomical twilight zone, viewed in area of dial enclosed by them is rise, southing and fall of constellations, age of moon engraved on gold through circular aperture to tidal dial • Cases: plain gold inner with stirrup pendant and bow, aperture for winding to case back • gold outer case centred with a portrait of the muse of Astronomy (Urania) en grisaille, the surround decorated with translucent red enamel over engine-turning, further heightened with swags of opaque white enamel beads spaced with ovals of green enamel, the bezels decorated with translucent green enamel over engine-turning, with opaque enamel beaded stringing • both cases hallmarked 1778 and with case maker's mark IW for John Willis
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