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Few names in Swiss watchmaking carry the weight of competitive chronometric achievement quite like Longines. Founded in 1832 in Saint-Imier, the brand accumulated more Grand Prix awards at international exhibitions and observatory trials than virtually any other manufacturer of its era, a record of precision that stretched across the better part of a century. The “Grand Prize” designation printed on the dial of this watch is not a marketing embellishment. It is a direct reference to that legacy of competition wins, and it meant something very specific when Longines placed it on a dial: the movement inside had earned its place at the top of the brand’s lineup. Distributed through the Longines-Wittnauer Watch Co. in New York, Geneva, and Montreal, the Grand Prize Automatic represented the most refined expression of Longines’ in-house watchmaking for the North American market during the late 1950s and 1960s.
The caliber 840 that powers this watch is an in-house Longines automatic movement with 17 jewels, featuring the brand’s characteristic full rotor design. The movement, visible in our photographs with the caseback removed, carries the “LONGINES” name and winged hourglass logo on its rotor along with “GRAND PRIZE AUTOMATIC,” and the bridge plates are signed “LONGINES WATCH CO.” with “SEVENTEEN 17 JEWELS.” This is not an ébauche-based caliber sourced from an outside supplier. Longines designed and built their own movements in Saint-Imier, and the cal. 840 reflects that heritage with clean finishing and an architecture refined over decades of in-house development. The inside of the caseback is stamped “LONGINES-WITTNAUER / WATCH CO. INC. / NEW YORK / GENEVA MONTREAL / PRESS,” with the reference 69-238 and serial number 5076442.
The gold filled case is slim and elegantly proportioned, with thin, straight lugs that give the watch a distinctly dressy character. The side profile reveals just how thin this watch sits, a consequence of the flat automatic movement and the restrained case design that Longines favored for its Grand Prize pieces. The smooth, polished bezel frames the dial without excess, and the crown is proportioned to match the overall slimness of the case. The gold fill retains a warm, even tone throughout, with typical surface wear consistent with decades of use but no significant wear-through visible on the case body or lugs. The caseback shows typical scratching from past openings and wear.
The dial is, without question, the highlight of this particular example. The silver sunburst finishing radiates from the center of the dial in an even, fine-grained pattern that catches light beautifully at every angle, shifting subtly between warm silver and cool white depending on the light source. The applied gold baton indices are crisp and fully intact, with a doubled baton at 12 o’clock providing a subtle visual anchor. The “LONGINES” name sits below the winged hourglass logo in the upper half of the dial, with “GRAND PRIZE” in printed capitals and “Automatic” in flowing script positioned below center. “SWISS” appears at the very base. The gold dauphine hands have aged with remarkable grace, showing barely any patina or discoloration. We encounter a lot of vintage Longines dials, and this one stands out for how well it has been preserved. There is no visible spotting, no discoloration, and no fading of any kind. It presents almost exactly as it would have when the watch left the factory.
For the collector who appreciates the quiet authority of a well-made dress watch from one of the great Swiss houses, this Longines Grand Prize Automatic is about as good as it gets at this level. The combination of an in-house automatic movement, a gold filled case of genuine elegance, and a dial in this condition makes it one of the most wearable and visually rewarding vintage Longines pieces we have had the pleasure of offering.
