Important Collectors’ Wristwatches, P...

Geneva, Oct 04, 2009

LOT 355

Specially made for Alberto Santos Dumont in 1928 L. Leroy & Cie, Horlogers a Paris, ?Chronographe dedoublant?, No. 20105, case No. 16017. Ordered by Henri Dumont and made especially for Alberto Santos Dumont in 1928. Extremely fine and historically important, 18K gold, keyless pocket watch with split-seconds chronograph and progressive 30-minute register.

CHF 75,000 - 100,000

USD 70,000 - 95,000 / EUR 50,000 - 65,000

C. Four-body, ?bassine et filets?, polished band and border, engine-turned back with engraved foliate monogram HD, button for start/stop and return-to-zero of the chronograph in the crown, split-seconds pushbutton at 11 o?clock. Hinged gold cuvette inscribed ?Mai 1928, No. 20105, Henri Dumont, Mouvement de Chronographe dedoublant Execute specialement pour M. Santos Dumont par L. Leroy & Cie?. D. Matte silver, champlevé Breguet numerals, outer minute divisions, outermost fifths of a second chronograph divisions, subsidiary 30-minute register at 12 o?clock, subsidiary seconds at 6 o?clock, engine-turned center. Blued steel Breguet hands. M. 40 mm, 18???, frosted gilt bar caliber, 22 jewels, straight-line lever escapement, large-diameter cut-bimetallic compensation balance with gold screws, blued steel Breguet balance spring, index regulator. Dial, cuvette and movement signed. Diam. 46 mm.


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Grading System
Grade:
Case: 3

Good

Movement: 2*

Very good

Overhaul recommended, at buyer's expense

Dial: 3-7-01

Good

Oxidized

HANDS Original

Notes

The present watch, with its original leather strap, is evidence of Santos Dumont's insistence on having a watch that could be easily consulted by a pilot in flight. It was ordered for the airman by his father, Frenchman Henri Dumont.
Alberto Santos Dumont (1873 ?1932) an inventive and imaginative pioneer of aviation, was born to a prosperous coffee producing family in Brazil. His father, Henri Dumont, was an engineer. of French extraction. Santos Dumont designed, built, and flew the first practical dirigible balloons. On October 19, 1901, he won the Deutsch de la Meurthe prize for a flight that rounded the Eiffel Tower. He gave away the prize money to his mechanics and to the poor people of Paris. On October 23, 1906 Santos Dumont made the first public European airplane flight. Having become an international hero, in 1904 he was invited to the White House by President Theodore Roosevelt. Santos Dumont designed his first airplane in 1905. His dream of flying came true on October 23, 1906, when he flew his 14-bis airplane 60 meters (200 ft) at a height of 2 - 3 meters (10 ft). Santos Dumont's final design was the Demoiselle monoplane. Convinced that aviation would inaugurate a new and prosperous era for all mankind, Santos Dumont generously made the plans of the Demoiselle available for free. Santos Dumont played a major role in the popularization of the wristwatch, having asked his friend Louis Cartier to design a watch for a sportsman, that could be consulted without removing one's hands from the controls. This resulted in the creation of the famous 1904 Cartier wristwatch. After having been diagnosed with multiple sclerosis, Santos Dumont returned to Brazil. In 1918 he built a house on a hillside in Petrópolis, in the mountains near Rio de Janeiro. He called it A Encantada (The Enchanted), after its street, Rua do Encanto (Enchantment Street). Seriously ill, and depressed over the use of aircraft for warfare rather than the good of mankind, Santos Dumont is said to have committed suicide on July 23, 1932. Alberto Santos Dumont is considered by many to be the father of aviation. His house in Petrópolis, Brazil, is now a museum.