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The Encyclopedia of Horology

Le Locle, Switzerland

Fabrique des Billodes

Partially verified

Factory production

History

Georges Favre-Jacot's manufacture, which became Zenith.

Major innovations

    Known markings

      Serial numbers

      This archive holds no verified serial-number table for this maker. Do not date a piece from its serial number alone; use case hallmarks, movement design and documented comparison examples.

      Collecting significance

      Originality of dial, hands, case and movement is the main consideration. Check that the movement belongs to the case and that the dial has not been refinished.

      Sources & references

      1. Kathleen H. Pritchard, Swiss Timepiece Makers 1775–1975
      2. Brian Loomes, Watchmakers and Clockmakers of the World
      3. Mikrolisk trademark and maker index

      Where sources disagree, the disagreement is stated rather than resolved silently.