FB 1R.6-1 Carburised steel

Inspired by the Marine Chronometer No. 7 that Ferdinand Berthoud produced in 1767, the construction and the regulator-type display of the FERDINAND BERTHOUD FB 1R.6-1 chronometer overturn traditions. Composed of the rear side of the black rhodium-plated nickel silver regulator plate adorned with straight-grained lines, the dial features three openings: one for the hours (at 2 o’clock), another for the minutes (at 12 o’clock) and a third for the power reserve (at 10 o’clock).

The FB-T.FC.R calibre, with its pillar-type architecture, features a direct-drive centre seconds tourbillon whose constant force is provided by a fusee-and-chain transmission mechanism incorporating a satellite differential gear and Malte Cross stopwork device. Continuing the tradition of precision inherited from Ferdinand Berthoud, this COSC-certified timepiece is available as a 20-piece limited edition in carburised steel.

  • Reference
  • FB 1R.6-1
  • Limited edition
  • 20 pieces
  • Case material
  • Carburised stainless steel
  • Case diameter
  • 44 mm
  • Case thickness
  • 13.95 mm
  • Caseback
  • Sapphire
  • Water resistance
  • 30 metres
  • Movement
  • Tourbillon with fusee-and-chain transmission
  • Winding
  • Manual
  • Power reserve
  • 53 hours
  • Frequency
  • 21.600 v/h (3 Hz)
  • Components
  • 1158
  • Dial color
  • Black rhodium
  • Dial material
  • Nickel silver
  • Dial decoration
  • Vertical satin-finished Hand chamfered cut-out
  • Functions
  • Hours
    Minutes
    Seconds
    Power Reserve
  • Bracelet material
  • Alligator leather
  • Buckle type
  • Folding clasp
  • Buckle material
  • Titanium