Roger Dubuis Sympathie Bi-Retrograde Perpetual Calendar Chronograph

Technical characteristics

Type

Perpetual calendar chronograph

Material

18K pink gold

Movement

Cal. RD 5637

Case number

196920

Quality mark

Seal of Geneva

Gemstone count

21 jewels

Place recorded

Switzerland

Case dimensions

35 x 35 mm

Movement number

73

Production year

1998

Maker / attribution

Roger Dubuis

Design

Case and Dial

The timepiece features a three-body, solid 18K pink gold case designed in a characteristic cushion shape. It incorporates a lapidated bezel and curved lugs fitted with screw bars. The case design is water-resistant and includes a transparent case back secured by eight screws, allowing visibility of the movement. Square chronograph pushers are positioned on the case band along with the necessary correctors for the perpetual calendar functions. The dial is presented in a two-tone black finish, accented by applied pyramidal indexes made of pink gold. The arrangement includes an outer track for fifth-of-a-second timing, subsidiary registers for the months and leap years at 12 o'clock, constant seconds at 9 o'clock, and a 30-minute chronograph counter at 3 o'clock. Retrograde displays for the day and date occupy the sides of the dial, complemented by an aperture for moon phases at the bottom.

Visible features

• Cushion-shaped pink gold case with lapidated bezel • Two-tone black dial with retrograde date and day sectors • Square chronograph pushers located on the case band • Transparent case back secured with eight screws

Movement and Escapement

The watch is driven by the Caliber RD 5637, a movement decorated with fausses cotes and finished with rhodium plating. It is distinguished by the presence of the Seal of Geneva quality mark. The technical configuration includes a straight-line lever escapement paired with a monometallic balance adjusted specifically to five positions. To ensure chronometric precision, the movement features a self-compensating Breguet balance spring and a swan-neck micrometer regulator, which serves as a shock absorber. The mechanical construction supports the integrated chronograph and the complex perpetual calendar with bi-retrograde functions. The auction house reports that an overhaul for the movement is recommended for the new owner.

Provenance and Accessories

The watch was originally produced in 1998 and sold on July 13, 2001. It is documented as a "Bulletin d'Observatoire" chronometer, confirming its testing and certification by the COSC. The watch is signed on the dial, case, and movement. The set is complete with several original items, including the fitted presentation box, the certificate of origin, the COSC certificate, and the setting pin required to adjust the calendar complications. The watch is fitted with an original 18K pink gold Roger Dubuis buckle.

Identification

Reference

S34 5637 5

Serial number

196920

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.