Important Modern & Vintage Timepieces

Geneva, May 15, 2016

LOT 227

URBAN JURGENSEN & SONNER BY DEREK PRATT TWIN BARREL TOURBILLON POWER RESERVE YELLOW GOLD Urban Jurgensen & Sonner, Copenhagen by Derek Pratt, No . 19003. Made circa 1980. A fine, large, heavy, exceptional and rare, 18k yellow gold openface pocketwatch with one-minute tourbillon and power reserve.

CHF 50,000 - 70,000

HKD 400,000 - 560,000 / USD 52,000 - 73,000

Sold: CHF 61,250

Four-body, polished, glazed back displaying the movement. Silver with black painted roman numerals, outer minute track, power reserve at 12, subsidiary seconds. Blued steel Breguet hands. Rhodium plated, three-quarter plate, twin-barrel winding, bimetallic compensation balance, polished three-arm tourbillon indicating seconds, steel flat balance spring with terminal curve.


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Grading System
Grade:
Case: 2-8

Very good

Slightly scratched

Movement: 2*

Very good

Overhaul recommended, at buyer's expense

Dial: 2-01

Very good

HANDS Original

Notes

Dial, case and movement signed. DIAM. 63 mm. THICKNESS 21mm.