Important Modern & Vintage Timepieces

Hong Kong, Jul 23, 2020

LOT 79

Paul Ditisheim
Patented ring-watch; 18K yellow gold, enamel and pearls

HKD 30,000 - 50,000

CHF 3,700 - 6,100 / USD 3,900 - 6,500

TO BE SOLD WITHOUT RESERVE

18K yellow gold, enamel and pear-set, half hunting-case, keylesswinding, form-watch in the shape of a ring, with expandable circle (or “ring body”).
White enamel dial with radial Roman numeral.
Royal blue flinqué enamel (translucent enamel over guilloché engine
turning) cover with radial Roman numerals, set on the border with 31 half-pearls.
7’’’, rhodium-plated, going barrel, cylinder escapement, monometallic balance (gilded brass) and blued steel flat hairspring, index regulator.


Grading System
Grade: AAA

Excellent

Case: 3

Good

Movement: 3*

Good

Overhaul recommended, at buyer's expense

Dial: 3-01-04

Good

HANDS Original

HANDS Later

Brand Paul Ditisheim, La Chaux-de-Fonds

Year circa 1905-1915

Case No. 34 197

Caliber 7’’’, cylinder escapement, “Grand Prix Paris 1900”

Dimensions Ø 19.5 mm

Accessories fitted box

Notes

Case based on the Swiss invention patent No. 35 123, delivered on December 5, 1905, to Paul Ditisheim, La Chaux-de-Fonds, for a “Montre-bague” (Ring-watch), with the ring intended to be worn on the finger is expandable, and, with a protective cover for the glass.
Even if this object is not signed, it can be formally given to Paul Ditisheim thanks to the mention “Grand Prix / Paris 1900” stamped on the barrel-bridge of the movement and the mention of the Swiss invention patent engraved inside the case.
For further information and the biography of Paul Ditisheim (1868-1945), please refer to the next lot of this auction.