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The Encyclopedia of Horology

Wristwatch · Split-seconds chronograph wristwatch

IWC Portuguese Chronographe Rattrapante Reference 3712

Partially verified

The IWC Portuguese Chronographe Rattrapante, reference 3712, is a stainless steel wristwatch manufactured circa 2004. This model features a three-body, polished and brushed stainless steel case measuring 41 mm in diameter and 13 mm in thickness. The watch is powered by the gilt brass Caliber C76240 movement, which contains 27 jewels and is decorated with oeil-de-perdrix. The timepiece functions as a split-seconds chronograph with a 30-minute register. The matte silver dial is finished with applied pink gold Arabic numerals and features pink gold feuille hands. The external architecture includes an overhanging bezel, concave lugs, a case back secured by four screws, and a sapphire crystal. The watch is paired with an IWC stainless steel buckle. The auction description reports the watch is in very good condition, noting slight scratching on the case and that an overhaul for the movement is recommended.

The stainless steel IWC Portuguese Chronographe Rattrapante, reference 3712, showing the silver dial, pink gold numerals, and the split-seconds chronograph pusher.
The stainless steel IWC Portuguese Chronographe Rattrapante, reference 3712, showing the silver dial, pink gold numerals, and the split-seconds chronograph pusher. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Split-seconds chronograph wristwatch
Maker / attribution
International Watch Co. Schaffhausen
Reference
3712
Catalogue / lot identifier
91
Source-reported date
circa 2004
Source-reported place
Switzerland
Source-reported serial
2697928

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 Construction

The watch is housed in a three-body, stainless steel case characterized by a combination of polished and brushed finishes. The design incorporates an overhanging bezel and concave lugs, contributing to its structural profile. The case back is secured by four screws, and the watch is fitted with a sapphire crystal. It measures 41 mm in diameter and 13 mm in thickness.

The matte silver dial displays applied pink gold Arabic numerals. The layout includes an outer dot minute track and a 1/5th seconds track featuring 5-second Arabic markers. Two subsidiary dials provide small seconds and a 30-minute register function. The time is indicated by pink gold feuille hands, and the watch bears the 'Chronograph Rattrapante' signature on the dial face.

Evidence for this section
  • “Three-body, polished and brushed, overhanging bezel, concave lugs, case back secured with 4 screws, sapphire crystal.”
  • “Matte silver with applied pink gold Arabic numerals, outer dot minute track and 1/5th seconds track with 5-second Arabic markers, subsidiary seconds and 30-minute register dials.”

Movement Details

The timepiece is powered by the caliber C76240, a movement constructed from gilt brass and finished with oeil-de-perdrix decoration. It is equipped with 27 jewels and a straight-line lever escapement. Technical features include a monometallic balance adjusted to 5 positions, a shock absorber, and a self-compensating flat balance spring.

The movement also incorporates a hack mechanism to facilitate precise time setting.

Evidence for this section
  • “Cal. C76240, gilt brass, oeil-de-perdrix decoration, 27 jewels, straight- line lever escapement, monometallic balance adjusted to 5 positions, shock absorber, self-compensating flat balance spring, hack mechanism.”
  • “Movement: 2* Very good Overhaul recommended, at buyer's expense”

Signatures and Condition

The watch is signed by the manufacturer on the dial, the case, and the movement. The serial number for the case is recorded as 2697928. The watch is accompanied by a stainless steel IWC buckle, and the overall grading provided by the auction house is 'AA Very good.'

The auction description reports that the dial is in an 'as new' state. The case is described as being in 'very good' condition despite showing slight scratching. The hands are verified as original, and the dial, case, and movement are confirmed as being signed by the maker.

Evidence for this section
  • “Dial, case and movement signed.”
  • “Grading System Grade: AA Very good”
  • “Case: 2-8 Very good Slightly scratched”

Open research questions

  • What is the specific history of the caliber C76240 movement's production cycle?
  • Does the specific case number 2697928 correspond to a specific production batch within the 2004 release year?

Source evidence

Recorded claims and source quotations for IWC Portuguese Chronographe Rattrapante Reference 3712
FieldSource-reported valueSource quotation
MakerInternational Watch Co. Schaffhausen“International Watch Co. Schaffhausen”
Reference3712“Ref. 3712”
Case Number2697928“case No. 2697928”
MovementCal. C76240“Cal. C76240”
Diameter41 mm“DIAM. 41 mm.”
Thickness13 mm“THICKNESS 13 mm.”
ComplicationSplit-seconds chronograph“split-seconds chronograph”
Condition ReportOverhaul recommended“Overhaul recommended, at buyer's expense”

Visible details

  • Features a distinct split-seconds pusher on the upper left side of the case.
  • Dial displays applied pink gold Arabic numerals and a silvered finish.
  • Hands are executed in a pink gold feuille style.
  • Case is composed of polished and brushed stainless steel surfaces.

Research qualifications

  • The movement requires an overhaul as reported by the auction description.
  • The exact date of manufacture is stated only as 'circa 2004'.

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

Consulted source

IWC REF. 3712 PORTUGUESE SPLIT-SECONDS CHRONO STEEL International Watch Co. Schaffhausen, "Portuguese, Chronographe Rattrapante," case No. 2697928, Ref. 3712. Made circa 2004. Very fine, large, stainless steel wristwatch with round button split-seconds chronograph, register and a stainless steel IWC buckle.

Reviewed 2026-10-26 · Record 0340dd89cb

Terms in this record

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

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