This outstanding cross-disciplinary project drew on the expertise of more than 80 artisans and specialists from Chronométrie Ferdinand Berthoud and Chopard to create a contemporary watch, entirely handcrafted and inspired by Ferdinand Berthoud's Astronomical Pocket Watch No. 3.
NAISSANCE D’UNE MONTRE 3 : AU TEMPS QUI INSTRUIT
Naissance d’une Montre 3 is a horological heritage project with an important human dimension representing the culmination of six years’ work. The result is a timekeeper conceived for the wrist, officially chronometer-certified by the COSC and handcrafted using traditional tools, without digital assistance.
Constant force via a fusee-and-chain transmission system, bimetallic balance, central seconds hand, open structure: its technical and aesthetic characteristics are deeply rooted in the heritage of the Master Watchmaker, Ferdinand Berthoud.
The Chronomètre FB 4BTC.1, one of nine available versions, features a handcrafted domed round case in 18-carat white gold, movement components in 2N pale yellow gold, and a dial also handcrafted in 18-carat white gold.
features
The balance of Calibre FB-BTC.FC is a chapter in technical history in its own right. It features a Guillaume-type bimetallic split balance made of Invar and brass, designed for maintain the oscillation frequency by compensating for the effects of temperature.
As expected, the 11 “Naissance d'une Montre 3” chronometers meet the same quality and finishing criteria as any other contemporary timepieces from Chronométrie Ferdinand Berthoud. They offer vivid proof that what truly counts is the journey rather than the destination – and that this journey is shaped by the passing of time, the “temps qui instruit” (Dedicated to time, the great teacher) in the words of Louis Berthoud, Ferdinand Berthoud’s nephew.
Specifications

Case
- Material : 18-carat white gold
- Case Type : Handcrafted domed round
- Diameter : 44.30 mm
- Thickness : 13 mm
- Water resistance : 30 m
- Glass : Glare-proofed, domed sapphire crystal glare-proofed on both sides
- Case-back : Handcrafted in 18-carat white gold, secured by 8 screws and fitted with a glare-proofed sapphire crystal pane
- Crown type : Handcrafted fluted crown in 18-carat white gold, featuring a hand-engraved "FB" logo
- Precious material: ethical gold certified by the RJC Chain of Custody
Movement
- Calibre : FB-BTC-FC
- Type Of Movement : Mechanical with fusee-and-chain transmission system and thermo-compensated bimetallic balance
- Type Of Winding : Hand-wound
- Diameter : 35,80 mm
- Тhickness : 8.35 mm
- Lines : 15 ¾’’’
- Number of jewels : 37
- Frequency : 21,600 vph (3Hz)
- Power reserve : 50 hours
- Number of components : 747
- Chain length : 172
- Certification : Chronometer-certified by the COSC
Dial and Hands
- Dial : Handcrafted in 18-carat white gold
- Hours and minutes dial, circular satin-finished, indicating the hours with hand-engraved Roman numerals and the minutes using Arabic numerals
- Circular satin-finished seconds ring
- Handcrafted hands in steel blued by traditional heat treatment
Functions and Display
- Hours and minutes between 1 and 2 o’clock
- Central seconds
- Power reserve at 9 o'clock
Strap and Buckle
- Strap : Hand-stitched rolled-edge alligator leather
- Buckle : Handcrafted 18-carat white gold pin buckle