Omega Cosmic Collector's Series Number Two

Technical characteristics

Type

Triple date wristwatch with moon phases

Model

Cosmic

Jewels

31

Movement

Caliber 2601

Reference

BG 156.2001

Dimensions

33.5 x 33 mm

Case Serial

57977930

Case Material

18K pink gold

Place recorded

Switzerland

Maker / attribution

Omega

Design

Visible features

• Black dial with pink gold baton, dagger, and pyramidal indexes • Pushers integrated into the case band for calendar adjustments • 18K pink gold square case with stylized straight lugs • Moon phase aperture positioned at 6 o'clock

Movement and Mechanics

Power is provided by the Omega Caliber 2601 self-winding movement. This caliber is rhodium-plated and features 'fausses côtes' decoration. The technical specifications include 31 jewels and a straight-line lever escapement. To ensure accuracy, the balance is monometallic and adjusted to 5 positions, paired with a self-compensating flat balance spring and a micrometer regulator. The movement is signed, as are the dial and the case. The mechanism functions to drive the triple date and moon phase complications housed on the dial.

Case and Dial Construction

The watch is housed in a three-body, 18K pink gold square case that has been finished with both polished and brushed surfaces. It features a concave bezel and stylized straight lugs, with functional pushers integrated into the band for adjusting the calendar complications. The case back is engraved with information regarding the Omega Museum Collection and the individual series number. The crystal is made of sapphire, providing water resistance to the assembly. The dial is black, contrasted by applied pink gold indexes in baton, dagger, and pyramidal shapes. The calendar information is displayed through apertures for the day of the week and month, while the date is indicated by an outermost graduation featuring pink gold Arabic numerals. A subsidiary dial at the 6 o'clock position serves the moon phase display, and the time is indicated by pink gold alpha hands.

Provenance and Series Context

This watch is identified as the 'Collector's Series Number Two' originating from the Omega Museum Collection. The series is intended to reference the year 1951, as indicated by the '1951' marking on the case back. It is documented by the individual serial number 768/1951, indicating its specific production run within the Museum Collection series. The watch was produced in 2001. The item is currently held by a Swiss collector and was presented for sale as a lot without a reserve price, reflecting its status as a collector's piece within the broader horological market.

Identification

Reference

BG 156.2001

Serial number

57977930

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.