| Grading System | |
|---|---|
Grade: AA |
Very good |
Case: 3-17 |
Good Slightly spotted |
Movement: 3* |
Good Overhaul recommended, at buyer's expense |
Dial: 1-01 |
As new HANDS Original |
Brand L. Leroy & Cie
Year circa 1913
Movement No. 2 861
Case No. 9 282
Caliber 19''' gilded brass, with going barrel, straight-line lever escapement, Guillaume balance and blued steel hairspring with terminal curve
Dimensions Ø 51 mm.
Signature dial, case and movement
Accessories Extract from the Archives
Notes
The Extract from the Archives, dated November 22, 2018, mentioned that this watch was sold on December 8, 1913, to Monsieur Hainchelin, for the amount of 600 francs. Guillaume Balance The Guillaume balance is a compensated bimetallic balance, made of anibal (an alloy of steel and nickel) and brass, after the works of Dr Charles-Edouard Guillaume (1861-1938), with which the middle-temperature error is practically eliminated. The middle- temperature error (or Dent's anomaly), is the difference between the rate of a Chronometer at the mean temperature and the average of the rates at extreme temperatures. This type of balance was used by the horological manufactories since 1904.