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Online Christmas Auction

Hong Kong, Dec 11, 2019

LOT 8

ATO (Léon Hatot) and Blancpain - Early self-winding wristwatch; “Rolls”; 18K yellow gold

18K yellow gold, self-winding, rectangular-shaped, Art Deco, gentleman’s wristwatch, silver dial with subsidiary seconds at 6 and patented movement. Case-back engraved in taille-douce “Al buen amigo / Tito M·Rapallo / 21·7·932 / M. T a Ahran”.

Brand ATO, Paris

Model “Rolls”

Year circa 1930-1935

Movement No. unnumbered

Case No. 100 119 (by Fabrique de boîtes P. Etienne, Les Bois, Jura, Franches-Montagnes)

Material 18K yellow gold

Bracelet brown leather strap

Buckle stainless steel buckle

Caliber 9’’’ ½, by Blancpain, Villeret (Jura Bernois), stamped “Hatot’s patents pending in all countries”, mounted on balls, rolls back and forth, thus winding the watch

Signature dial and movement

Accessories copies of invention patents

HKD 10,000 - 12,000

EUR 1,200 - 1,450 / USD 1,300 - 1,550 / CHF 1,300 - 1,550

TO BE SOLD WITHOUT RESERVE


Grading System
Grade: A

Good

Case: 3-6-8

Good

Slightly oxidized

Slightly scratched

Movement: 3 *
Dial: 3-6-8-01

Good

Slightly oxidized

Slightly scratched

HANDS Original


Notes

The Hatot self-winding system, called “Rolls”, made it possible to adapt a self-winding mechanism to both rectangular wristwatches and small-sized lady’s writswatches. Most often found in gold plated or chromium plated cases, 18K gold cases such as this lot are extremely rare.
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Movement based on the French invention patent No. 704 910, delivered on January 11, 1930, to Société Anonyme des Etablissements Léon Hatot, Paris (France), for a “Perfectionnements aux montres dont le remontage est assuré automatiquement par les déplacements et secousses qu'elles subissent, et aux systèmes analogues”.