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HELICAL FREE SPRUNG Hairspring, Pivoted Detent Chronometer Antique Pocket Watch

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HELICAL FREE SPRUNG Hairspring, Pivoted Detent Chronometer Antique Pocket Watch


ID: 297

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Good pocket chronometer in golden case, France circa 1860 / 1870.
Diameter is 51 mm, weight is 107.6 gramm.

Excellent pocket chronometer.
Movement is equipped with early and particular version of pivoted detent escapement.
It's made with flat return spring, instead of hairspring-type one - in the manner of spring detent escapement.

Movement is equipped with diamond end stone, free sprung helical balance spring - it lacks regulator, as it's already regulated in best possible way.
Movement also features golden escapement wheel, counterpivots for all escapement train.
The ruby jewels in the bridges are unusually thick, probably to reduce friction.

Movement is signed by Monard Girod under the dial.
Tardy in "Dictionnaire de Horlogers Français" records Monard-Girod in Paris, installed at Coq-Heron st. about 1860, Coquillere st about 1870s.

Case is also French made and bears French hallmarks for 18k gold and maker's mark (bow is not gold).

Nice piece of French chronometry - rare item.




Condition
The watch appears to be in good condition.
Movement functions as it should.
Dial seems to be in good condition.
Case has common period wear without significant flaws.
Very nice piece in good condition.
Item is not available