Ferdinand Berthoud / Chronomètre FB 1L

Ferdinand Berthoud Chronomètre FB 1L

Collection profile · 2019

Chronomètre FB 1L extends Ferdinand Berthoud's fusee-and-chain tourbillon platform into an astronomical moon display, adding a patented moon-age indication and a separate waxing-or-waning display.

Collection shots

Why it matters

FB 1L gives the original Chronomètre FB 1 architecture a distinct astronomical identity, showing how the brand can layer poetic complications onto its rigorous constant-force tourbillon base.

Key references

FB 1L.1 2019

Chronomètre FB 1L.1 — Official moon-display reference with fusee-and-chain tourbillon architecture and a dedicated moon-age indication. Case: 44 mm. Movement: FB-T.FC.L. Material: 18-carat white gold with black ceramic lugs.

Ferdinand Berthoud official

FB 1L.4 2019

Chronomètre FB 1L.4 — Titanium launch variant documented alongside FB 1L.1, using the same astronomical display concept in a lighter case execution. Case: 44 mm. Movement: FB-T.FC.L. Material: Ceramised titanium with white-gold central container.

Monochrome

Collection timeline

• 2019 — Ferdinand Berthoud introduced the Chronomètre FB 1L family with a complex moon display.
• 2019 — The launch references included FB 1L.1 and FB 1L.4 variants documented in official and specialist coverage.
• 2019 — The line expanded the FB 1 tourbillon platform with a patented moon-age display and waxing-or-waning indicator.

Official collection ↗

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More from Ferdinand Berthoud

• Chronomètre FB 1 — Ferdinand Berthoud Chronomètre FB 1 is the maison's debut modern chronometer family, pairing an octagonal case with a tourbillon, constant force and fusee-and-chain architecture inspired by historical marine chronometers.
• Chronomètre FB 2RE — Chronomètre FB 2RE is Ferdinand Berthoud's second modern collection, moving the maison into a round case with central hours, minutes and deadbeat seconds while retaining fusee-and-chain constant force with a one-second remontoir d'egalite.

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