IGNAZ RUZICZKA, IN WIEN [Ignaz Ruziczka，維也納] | A VERY FINE AND RARE GOLD OPEN-FACED ONE-MINUTE TOURBILLON WATCH WITH CHRONOMETER ESCAPEMENT AND RÉAUMUR THERMOMETER CIRCA 1840 [極罕有黃金一分鐘陀飛輪懷錶備天文鐘擒縱系統及列氏溫度計，年份約1840]

IGNAZ RUZICZKA, IN WIEN

[ Ignaz Ruziczka，維也納]

A VERY FINE AND RARE GOLD OPEN-FACED ONE-MINUTE TOURBILLON WATCH WITH CHRONOMETER ESCAPEMENT AND RÉAUMUR THERMOMETER 

CIRCA 1840

[ 極罕有黃金一分鐘陀飛輪懷錶備天文鐘擒縱系統及列氏溫度計，年份約1840]

• Movement: gilded ¾ plate, spring detent chronometer escapement mounted upon an unusual crescent shaped carriage set with screws around the perimeter, bi-metallic compensation balance with two large curved sliding weights, blued steel helical spring, fusee and chain, the backplate decoratively engraved with scrolling foliage and signed Ignaz Ruziczka, in Wien

• Dial: white enamel, Roman numerals, outer minute ring, subsidiary seconds, sector for Réaumur graduated thermometer marked for Wärme & Kälte, spade hands, signed I^z Ruziczka, in Wien 

• Case: gold, engine-turned back, the band heavily chased and engraved with flowers and foliage, the pendant and bow similarly decorated, case back marked INV and 1840 within a cartouche, gold cuvette engraved with movement details and filled with white, light blue and green opaque enamels

diameter 56mm

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