Breguet 250th Anniversary Minute Repeater Tourbillon Ref. 3857PT

Technical characteristics

Type

Minute-repeating tourbillon wristwatch

Year

1997

Maker

Breguet

Case Material

Platinum

Complications

Minute repeating, tourbillon, jump-hours, perpetual calendar

Place recorded

Switzerland

Case Dimensions

40 mm diameter, 13 mm thickness

Movement Caliber

Cal. 556 QPRT

Maker / attribution

Breguet

Design

Visible features

• Visibility of the one-minute tourbillon cage at the 7 o'clock position • Jump-hour aperture at the 2 o'clock position with Arabic numerals • Retrograde date sector with blued steel pointer • Visible coin-edge detailing on the side of the case band

Movement and Regulator

The movement is the 13 1/2''' Caliber 556 QPRT, which is rhodium-plated and features oeil-de-perdrix decoration. It comprises 29 jewels and incorporates a one-minute tourbillon regulator. The tourbillon cage features three equidistant polished steel arms and a polished steel bridge. The escapement is a lateral lever type, paired with a monometallic balance and a self-compensating blued steel Breguet balance spring. Functionally, the watch includes a minute-repeating mechanism that operates on gongs, which is activated via a slide located in the case band. The movement uses an index regulator for timekeeping adjustments. The entire assembly is designed to balance complex calendar and repeating functions with the aesthetic presentation of the tourbillon.

Case and Dial Construction

The timepiece is housed in a three-body platinum case measuring 40 mm in diameter. The design features a polished finish with a curved bezel and a characteristic coin-edge band. The lugs are straight, and the watch is fitted with sapphire crystals on both the front and the transparent case back. The dial is rendered in silver with guilloché finishing. It displays a jump-hour aperture at the 2 o'clock position, utilizing black Arabic numerals on a matte gilt ground. Additional complications include a minutes chapter, a concentric fly-back date sector with a blued steel pointer, and subsidiary dials for days of the week and months. An aperture for the leap-year cycle and a seconds track surrounding the tourbillon are also present.

Provenance and Documentation

This watch was produced in 1997 to mark the 250th anniversary of the birth of Abraham Louis Breguet. The auction description reports that this specific piece was created upon a special request. The watch is signed on the dial, case, and movement. Included with the sale are several original accessories, including a fitted green lacquered wooden box, a Breguet platinum setting tool, a chain, an extra strap, and the Breguet certificate. The auction house provides a condition grade of 1 for the case, movement, and dial.

Identification

Reference

3857PT

Serial number

1748

Source note

Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.