149,250 CHF
Longines "Weems second setting watch", Caliber, 1869 N, circa 1933, production started on 18. 2. 1931 of 144 watches in silver, with silver bezel. Extremely rare, hour angle, center second, 14ct gold aviator' wristwatch. massive, polished, dedicated and hinged back. white enamel, with painted Arabic numerals at the center, revolving "mat silver" dial to adjust the time in seconds. "Breguet" blued steel hands. Notes Note. This watch in 14ct gold is an American Case probably unique, and must have been produced by AW case makers on a special request. This hour angle system is called the " Weems Model" because of its Inventor: Professor and Instructor Philippe Vanhorn Weems, of the Naval Academy of Annapolis, who was an Authority in the 1920-1930's. He formed the famous Charles A. Lindbergh who established the record for the first non-stop transoceanic flight. The hour angle watch "Lindbergh model" used for this flight is drawn from the Weems invention. Professor Ph. Weems wrote several important books and received a Gold Medal from the International Aeronautic Federation. This watch bears a large ball-shaped windingcrown, enabling the watch to be rewound by a pilot whilst wearing gloves. It is practically impossible to build a commercial timepiece which will keep time to the exact second under the conditions met in a ship or in an airplane. The unavoidable variation in the chronometer from true time has necessitated an extra calculation in navigation to compensa Read more…
Auctioneer:
Antiquorum
Date:
1991-05-26
