Knowledge Center

Professional Authentication Platform

Caliber 11 (Chronomatic)

Probable

The modular construction is why the crown sits on the left of the case on watches carrying it — a design consequence, not a styling choice, and a reliable identifying feature of the caliber family.

Specifications

Movement manufacturer
Heuer
Production
1969–?
Frequency
19,800 vph (2.75 Hz)
Winding
automatic
Complications
Chronograph · Date

Architecture

Automatic chronograph built as a chronograph module on a micro-rotor base, developed jointly by Heuer, Breitling, Hamilton-Büren and Dubois Dépraz.

Authentication notes

  • BridgesProbable

    Left-hand crown follows from the module

    The chronograph module occupies the position the winding stem would otherwise use, placing the crown on the left. A Caliber 11-era Monaco or Autavia with a right-hand crown warrants examination of what is actually inside it.

Related calibers

References using this caliber

Provenance of this record

Sources & Evidence

Secondary sourceCollector research

Ranfft Watch Movement Archive

Dr. Roland Ranfft (archived and maintained by volunteers)

Accessed
2026-08-18

Cited for

This referenceProbable
View source

Last verified: Not yet reviewed