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The Encyclopedia of Horology

Wristwatch · Self-winding diver's wristwatch

Ulysse Nardin Marine Diver Chronometer

Partially verified

This Ulysse Nardin Marine Diver Chronometer, reference 263-55, is a self-winding diver's wristwatch produced in the 2000s as part of a limited edition of 999 pieces. The watch is housed in a stainless steel three-body case measuring 40 mm in diameter and 12.5 mm in thickness, featuring a polished and brushed finish. It is equipped with a unidirectional revolving bezel for tracking decompression times, a screwed-down winding-crown, and a case back secured by six screws, which is engraved with historical achievements. The textured black dial includes applied large luminous indexes, a subsidiary guilloché seconds register, a central date marking of "1846" in red, an aperture for the date at 6 o'clock, and a power reserve graduation at 12 o'clock. The movement is the Ulysse Nardin Caliber UN 26, which features "oeil-de-perdrix" decoration and 28 jewels. The watch is fitted with a titanium Ulysse Nardin double deployant clasp.

Ulysse Nardin Marine Diver Chronometer, Reference 263-55, featuring a textured black dial and rotating bezel.
Ulysse Nardin Marine Diver Chronometer, Reference 263-55, featuring a textured black dial and rotating bezel. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Self-winding diver's wristwatch
Maker / attribution
Ulysse Nardin
Reference
263-55
Catalogue / lot identifier
279
Source-reported date
2000s
Source-reported place
Switzerland
Source-reported serial
895

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 Design

The case is constructed from stainless steel as a three-body design, finished with both polished and brushed surfaces. It incorporates a graduated unidirectional revolving bezel intended for calculating decompression times during diving activities. The case back is secured by six screws and features decorative engravings related to the history and achievements of the Ulysse Nardin brand. A sapphire crystal protects the dial, and a screwed-down winding-crown is present to assist in water resistance.

The dial is finished in black with a textured surface, populated by applied luminous indexes. It includes a subsidiary dial for seconds with a guilloché pattern and a central date reference, "1846," printed in red. A power reserve indicator is situated at the 12 o'clock position, while a date aperture is located at the 6 o'clock position. Luminous steel épée-style hands provide legibility for timekeeping and monitoring the dive bezel.

Evidence for this section
  • “C. Three-body, polished and brushed, graduated unidirectional revolving bezel”
  • “case back engraved with the Ulysse Nardin achievements, with 6 screws, screwed-down winding-crown”
  • “D. Textured black with applied large luminous indexes, subsidiary guilloché seconds dial”
  • “graduation for the up-and-down power reserve indication at 12, aperture for the date at 6”

Movement and Mechanics

The timepiece is powered by the Ulysse Nardin Caliber UN 26, a self-winding automatic movement. The movement features a visual decorative finish described as "oeil-de-perdrix," which is applied to the visible components. Mechanical regulation is achieved through a micrometer regulator, and the movement is constructed with 28 jewels.

The escapement is a straight-line lever type, complemented by a monometallic balance and a shock-absorber system. A self-compensating flat balance spring is utilized to regulate the oscillation of the balance.

Evidence for this section
  • “M. Cal. UN 26, "oeil-de-perdrix" decoration, 28 jewels, straight-line lever escapement”
  • “monometallic balance, shock absorber, selfcompensating flat balance spring, micrometer regulator”
  • “Overhaul recommended, at buyer's expense”

Provenance and Condition

The watch is identified as part of a limited production run, with the specific example being numbered 895 out of 999 pieces. It comes with a titanium Ulysse Nardin double deployant clasp. The provided information indicates it is the property of a Swiss collector.

The auction description provides a grading system for the watch's condition. The case and movement are both listed as Grade 1, representing "as new" condition, although the movement carries an additional notation recommending professional servicing. The dial is also rated as "as new," and the hands are identified as original to the timepiece.

Evidence for this section
  • “No. 895, Ref. 263-55. Made in a limited edition of 999 pieces”
  • “Property of an Swiss collector”
  • “Grade: A Good Case: 1 As new Movement: 1* As new”
  • “Dial: 1-01 As new HANDS Original”

Open research questions

  • What is the specific year of production within the 2000s for this individual serial number?
  • Has the watch received any factory authorized service since the initial sale?

Source evidence

Recorded claims and source quotations for Ulysse Nardin Marine Diver Chronometer
FieldSource-reported valueSource quotation
MakerUlysse Nardin“Ulysse Nardin, Le Locle, Suisse”
Reference263-55“Ref. 263-55”
Limited Edition999 pieces“Made in a limited edition of 999 pieces”
MovementCal. UN 26“M. Cal. UN 26”
Case constructionThree-body, polished and brushed“C. Three-body, polished and brushed”
Diameter40 mm“Diam. 40 mm”
Jewels28“28 jewels”

Visible details

  • Red "1846" numeral on dial
  • Unidirectional revolving bezel
  • Sub-dial with power reserve indicator at 12
  • Luminous épée hands

Research qualifications

  • Condition report suggests overhaul recommended at buyer's expense
  • Exact production year within the 2000s not specified

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

Terms in this record

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