| LOT 95 |
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| “Patent Thermometer”
Swiss, No. 88667. Made circa 1860.
Fine and very unusual, two-time-zone, 14K gold
pocket watch with center seconds and mercury Fahrenheit
thermometer.
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| C. Four-body, “bassine et filet”, polished bezel and band,
engine-turned back cover with polished border and vacant
cartouche. D. Gold, matte and foliate engraved, two meantime
dials, one with radial Roman numerals and outer dot minute
divisions, the other with radial Arabic numerals and outer dot
minute divisions, outer dot seconds divisions, curved mercury
thermometer in the lower half of the dial with Fahrenheit scale
calibrated from 20 to 130 degrees. Blued steel “spade” hands.
M. 46 mm., 20 1/2’’’, frosted gilt, the back plate cut-away with
scroll edges, going barrel, lateral lever escapement, three-arm
gold balance, blued steel flat balance spring, index regulator.
Diam. 52 mm.
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Estimate: 20,000 HKD - 25,000 HKD
Estimate: 2,500 USD - 3,200 USD
Estimate: 2,000 EUR - 2,600 EUR
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Grading system
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| The present watch has the unusual feature of a mercury-filled glass
tube thermometer as opposed to the more favored Houriet-type
bimetallic strip thermometer usually fitted to pocket watches. The
dual-time-zone is geared using an extra wheel mounted beneath a
bridge on the dial plate and driven from the center wheel, the going
barrel directly driving the other set of hands.
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Important Collectors’ Wristwatches, Pocket Watches, Clocks
25-11-2006 |
Sold including buyer's premium:
29,500 HKD |
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