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The Encyclopedia of Horology

Wristwatch · Chronograph

Montblanc Nicolas Rieussec Chronograph Automatic Ref. M29447 7138

Partially verified

This Montblanc Nicolas Rieussec reference M29447 7138 is a stainless steel automatic wristwatch dated by the auction house to circa 2010. Measuring 43mm in diameter, the case features a mono-pusher at the eight o'clock position and an exhibition display case back secured by six screws. The watch is powered by a 40-jewel automatic calibre R200 movement. The silvered dial layout presents an off-centre primary time display with Arabic numerals, dual rotating chronograph discs linked by a central bridge, dual time zone, date aperture at six o'clock, and an AM/PM indicator. It is fitted to a Montblanc black crocodile strap with a stainless steel deployant clasp.

Front view of the Montblanc Nicolas Rieussec stainless steel wristwatch on a black crocodile strap.
Front view of the Montblanc Nicolas Rieussec stainless steel wristwatch on a black crocodile strap. — Dreweatts. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
auctions.dreweatts.com
Category
Wristwatch · Chronograph
Maker / attribution
Montblanc
Reference
M29447 7138
Catalogue / lot identifier
178
Source-reported date
circa 2010
Country
Switzerland
Source-reported serial
PB 250564

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 External Construction

The watch features a stainless steel case with a 43mm diameter. It is equipped with an exhibition display case back secured by six screws and a fluted crown on the case side. The case incorporates a single chronograph pusher at the eight o'clock position.

The timepiece is fitted with a black crocodile strap and a stainless steel deployant clasp. Source observations note minor scratches and marks on the case, crown, and buckle when viewed under a 4x loupe, and similar marks on the strap.

Evidence for this section
  • “Stainless steel case, screwed down display case back with six screws”
  • “Size: 43mm”
  • “Integrated single chronograph pusher located on the case flank at eight o'clock.”
  • “Case appears to be in good condition with minor scratches and marks.”
  • “Crown has light scratches when viewed under a 4x loupe.”
  • “Strap appears to be in good condition with minor marks and creasing.”
  • “Buckle appears to be in good condition with minor marks and scratches when viewed under a 4x loupe.”

Dial and Complications

The watch has a silvered dial featuring an off-centre time display with Arabic numerals and 'SWISS MADE' text at the six o'clock position. The chronograph design includes two rotating discs held by a decorative bridge.

Additional functions include a dual time zone, date aperture at the six o'clock position, and an AM/PM indicator. The source reports that the dial and hands appear in generally good condition when inspected under a 4x loupe.

Evidence for this section
  • “Dial: Silvered”
  • “Silvered dial featuring an off-centre time display with Arabic numerals.”
  • “Dial indicates 'SWISS MADE' at six o'clock.”
  • “Twin rotating chronograph discs anchored by an overarching decorative bridge.”
  • “Dial appears to be in a generally good condition with no marks visible when viewed under a 4x loupe.”
  • “Hands appear to be in a generally good condition.”

Mechanism and Operational Status

The movement is identified as an automatic Calibre R200 with 40 jewels. The auction house inspection noted limited evidence of previous intervention on the movement.

Operational status is limited; the source specifies that the chronograph was observed running for only one minute and not tested further. The auction house does not guarantee working order or accuracy.

Evidence for this section
  • “Cal. R200, automatic, 40 jewels”
  • “Movement appears to be in a generally good condition with little sign of previous intervention when viewed under a 4x loupe.”
  • “The chronograph counts one minute, but has not been tested further due to time constraints.”
  • “Dreweatts 1759 do not guarantee the working order or accuracy of any lots sold.”

Open research questions

  • What specific information is intended for the incomplete date entry on the warranty documentation?
  • Can the serial number PB 250564 be verified against Montblanc production records?

Source evidence

Recorded claims and source quotations for Montblanc Nicolas Rieussec Chronograph Automatic Ref. M29447 7138
FieldSource-reported valueSource quotation
ReferenceM29447 7138“REF. M29447 7138”
Serial NumberPB 250564“NO. PB 250564”
CalibreCal. R200“Cal. R200, automatic, 40 jewels”
Case Size43mm“Size: 43mm”
DialSilvered“Dial: Silvered”
Case MaterialStainless steel“Stainless steel case, screwed down display case back with six screws”
Included AccessoriesMontblanc box, instruction/warranty booklet, outer card packaging“Accessories: Montblanc box, instruction/warranty booklet, outer card packaging”

Visible details

  • Silvered dial featuring an off-centre time display with Arabic numerals.
  • Twin rotating chronograph discs anchored by an overarching decorative bridge.
  • Integrated single chronograph pusher located on the case flank at eight o'clock.
  • Dial indicates 'SWISS MADE' at six o'clock.
  • Fluted crown set at the three o'clock case side.

Research qualifications

  • Source notes the chronograph was only observed running for one minute and was not tested further due to time constraints.
  • The auction condition report states paperwork is dated with an incomplete entry ('dated .').

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

Consulted source

Y MONTBLANC, NICHOLAS RIEUSSEC, REF. M29447 7138, A STAINLESS STEEL CHRONOGRAPH WRISTWATCH

Reviewed 2026-10-22 · Record 415b6e3236

Terms in this record

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

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