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The Encyclopedia of Horology

Wristwatch · Chronograph wristwatch

Franck Muller Cintree Curvex Magnum Chronograph Master Calendar

Partially verified

This Franck Muller wristwatch, identified as the Cintree Curvex Magnum Chronograph Master Calendar, was produced circa 2000. It features a tonneau-shaped, curved stainless steel case measuring 34 by 47 millimeters with a 13 millimeter thickness. The watch is powered by a self-winding Caliber 1188 MC movement, which includes 37 jewels, a rhodium-plated finish with fausses cotes decoration, a platinum rotor, and a monometallic balance adjusted to five positions. The dial is silver with a guilloche pattern, displaying radial Arabic numerals, subsidiary dials for chronograph registers and running seconds, and date indicators including apertures for days and months and a red date graduation. The watch includes oval-shaped chronograph pushers, a domed sapphire crystal, and is secured by a stainless steel Franck Muller buckle. The case back is affixed with four screws, and the watch is water-resistant.

Front view of the Franck Muller Cintree Curvex Magnum Chronograph showing the guilloche silver dial and chronograph registers.
Front view of the Franck Muller Cintree Curvex Magnum Chronograph showing the guilloche silver dial and chronograph registers. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Chronograph wristwatch
Maker / attribution
Franck Muller
Reference
6850 CC MC AT
Catalogue / lot identifier
600
Source-reported date
circa 2000
Source-reported place
Switzerland
Source-reported serial
73

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The watch is housed in a tonneau-shaped, curved stainless steel case that measures 34 millimeters in width by 47 millimeters in length, with a case thickness of 13 millimeters. The exterior is polished and brushed, featuring oval-shaped pushers for operating the chronograph functions and a case back secured by four screws. The assembly includes a domed sapphire crystal that protects the dial.

The guilloche-textured silver dial is marked with stylized radial Arabic numerals and finished with blued steel spade hands. Chronograph readings are facilitated by subsidiary dials for seconds, 30-minute, and 12-hour registers. Time and date functions include a red outer graduation for the date, as well as apertures for the days of the week and the months.

Evidence for this section
  • “tonneau-shaped and curved”
  • “polished and brushed, case back with 4 screws, domed sapphire crystal”
  • “Guilloché silver with painted stylized radial Arabic numerals”
  • “apertures for the days of the week and the months”

Movement and Escapement

The timepiece is driven by the Caliber 1188 MC, a self-winding mechanical movement. It is constructed with 37 jewels and features rhodium-plated bridges finished with fausses cotes decoration. The movement incorporates a straight-line lever escapement and a self-compensating flat balance-spring.

Technical precision is managed by a monometallic balance adjusted to five positions. A platinum rotor provides the automatic winding capability for the movement. The dial, case, and movement are signed by the maker.

Evidence for this section
  • “M. Cal.1188 MC, rhodium-plated, fausses cotes decoration”
  • “37 jewels, straight-line lever escapement”
  • “monometallic balance adjusted to 5 positions”
  • “platinum rotor”

Condition and Attribution

The auction description assigns a variable grading to the components of the watch. The case is graded as '3-7', which is described as 'Good' but notes some oxidation.

The dial is rated as '2-01', denoting very good condition, and the hands are verified as original. The set is completed with a fitted box and certificate.

Evidence for this section
  • “Movement: 3* Good Overhaul recommended”
  • “Case: 3-7 Good Oxidized”
  • “Dial: 2-01 Very good”
  • “HANDS Original”

Open research questions

  • What is the specific functionality of the red-tipped central hand observed in the provided photograph?
  • Are the current strap and buckle considered the original components as supplied when new?

Source evidence

Recorded claims and source quotations for Franck Muller Cintree Curvex Magnum Chronograph Master Calendar
FieldSource-reported valueSource quotation
MakerFranck Muller, Geneve“Franck Muller, Genève”
ModelCintree Curvex Magnum Chronograph Master Calendar“Cintree Curvex, Magnum Chronograph Master Calendar”
Reference6850 CC MC AT“Ref. 6850 CC MC AT”
MovementCal. 1188 MC“M. Cal.1188 MC”
Case dimensions34 x 47 mm“Dim. 34 x 47 mm”
Case materialStainless steel“stainless steel wristwatch”
Movement decorationRhodium-plated, fausses cotes“rhodium-plated, fausses cotes decoration”
Date of manufacturecirca 2000“Made circa 2000.”

Visible details

  • Guilloche silver dial with painted Arabic numerals
  • Triple date display via apertures and central pointer
  • Oval-shaped chronograph pushers on the case flank

Research qualifications

  • Movement condition is reported as needing an overhaul
  • Case condition is noted as having some oxidation

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Magnum Chronograph Franck Muller, Genève, 'Cintree Curvex, Magnum Chronograph Master Calendar", No. 73, Ref. 6850 CC MC AT. Made circa 2000. Fine, tonneau-shaped and curved, self-winding, water-resistant, stainless steel wristwatch with oval-shaped button chronograph, registers, triple date and a stainless steel Franck Muller buckle. Accompanied by a fitted box and certificate.

Reviewed 2026-10-26 · Record 9a06074d71

Terms in this record

Glossary explanations for terms named in this object’s record.

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