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Longines Chronometer, Cal. 21.29

CHF 1,650


Rare Swiss made LONGINES Chronometer, SN: 2844711, Cal. 21.29 in fully working order in its original mahogany deck/showcase box. Made circa 1910s. Item used in watchmaking store windows, circa 1910-1920, never was available for sale. With the plate ‘Le Chronomètre Longines donne le plus exactement l’heure de l’observatoire‘ (The Longines chronometer gives the most accurate time of the observatory).

C. Two-body mahogany deck box with interior applied brass plaque “Le Chronomètre Longines donne le plus exactement l’heure de l’observatoire”. Gilt brass cuvette. D. Matte silver champleve radial Roman numerals, outer minute track, subsidiary seconds and power-reserve. Steel spade hands. M. Cal. 21.29, matte gilt, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring with Phillips terminal curve, micrometer regulator (patented by Patek Philippe). Dial, case and movement signed.

Clock is in overall good condition, running and ready to use or gift!

Dimensions : 15 x 13 x 5 cm, shipping weight is 2 kg.


Brand Longines
Model Chronomètre
Year Circa 1910s
Movement Hand winding
Calibre Longines 21.29
Case material Wood & brass
Case size 15 x 13 x 5 cm
Features chronometer
Box/Papers original box (no key available), separate extendable winding crown, stop-second feature


Fully working order. Very good vintage condition, surface scratches and scuffs through the age. No key for the box available.


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