1948 Omega Cosmic Vintage Triple Date Watch with Moon Phase - 18K Gold


Item No. GA2

In 1947, Omega released to the world the first complicated watch featuring a moonphase readout it had ever built. Called the Omega Cosmic, it was extremely complex even in comparison to today's watches, and could display the month, date, and day of the week with moonphase. When set correctly it could be used as a full featured navigational tool or as a display of incredible precision purchased to adorn a deserving gentleman's wrist.

The Cosmic was made in steel, steel and gold, gold plated, 14K gold, and at the top of line, 18K.

Today's offering showcases this beautiful and rare example of the 1st. edition Cosmic, encased in 18K gold. This first edition example was made before the caliber change from 27DL to 381.

We were fortunate to acquire it in such beautiful condition.

The 18K gold case is near mint. The dial with its cut-outs for displaying the month, day, and phases of the moon is bright and beautiful. The complicated Cosmic movement is running strong and true.

All complications work just as they should. Included with the purchase is a one-year C.O.T. warranty on the movement and its function, a custom printed Connoisseur of Time Certificate of Authenticity, and a new timing certificate.

Complicated Omegas:

Usually when things are complicated, it means more stress, more work, and more effort, but in the end, it's worth it. The same holds true for vintage wristwatches, where gifted artisans and engineers from years gone by labored months and years to create complicated timepieces that transcend art and talent. When it comes to vintage wristwatches, the highest realms of respect and value are reserved for these watches that do much more than merely tell time.

  • Manufacturer: Omega
  • Country of origin: Switzerland
  • Serial no.: 11,204,020
  • Year built: c. 1947-1948 (Pre-1949 when the caliber 381 labeling replaced the caliber 27 DL)
  • Model: Reference #2473
  • Functions: Time, Day, Date, Month, Moon Phase, Subsidiary Seconds
  • Designed for: Men
  • Case material: Solid 18K gold
  • Case markings (outside): Very well personalized "Harry J. Parker, San Antonio, Texas"
  • Case markings (inside): Omega Watch Co., Swiss made, 18K, Swiss Liberty Head hallmark
  • Case condition: Near mint with light scratches and light indentions in the back. Retains crisp hallmarks.
  • Dial: Light silver, signed Omega, outer date track, moonphase window, day and month in English, gold applique markers, previously refinished, bright and beautiful
  • Hands: Gold, lance style filled with luminous material, red date hand
  • Movement type: Omega caliber 27 DL PC, copper colored, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, index regulator
  • Movement markings: Omega Watch Co., Swiss, 17 Jewels
  • Jewels: 17 rubies
  • Band: Genuine alligator, signed Omega, vintage, equipped with vintage gold-plated Omega buckle, lightly worn
  • Crystal type: Acrylic, excellent condition
  • Timed: Timed to precision on a state-of-the-art computerized system.
  • Warranty: 1-year warranty. Please email concierge@cotwatches.com for details. Your watch is important to us, and we will take care of it for its lifetime. We provide the best after sale care in the business with an experienced team of watchmakers both of whom each have over forty years of experience.
  • Box/Papers: BOX - Connoisseur of Time watch presentation box; PAPERS - Custom printed Connoisseur of Time Certificate of Authenticity; New timing certificate
  • Returns: 7 days full refund. 100% satisfaction guarantee

We offer a 100% satisfaction guarantee for all of our watches. If you are in any way unsatisfied with the watch we will fully refund the purchase price anytime within 7 days after the watch has been received. Our goal is to exceed our client's expectations throughout the buying experience.

All watches are packaged carefully and mailed double boxed in specially constructed, reinforced shipping boxes designed for high value items. All watches are sent fully insured with signature required. Most of our domestic shipping is done through FedEx. At times we will also use USPS Express Mail, and we can accommodate most requests for your preferred carrier. International shipments are sent USPS International Express Mail or FedEx.

The purchase price will be the declared value of the merchandise on any required customs forms. The payment of all customs duties, tariffs, and taxes are the responsibility of the buyer.

Also note that water resistance of vintage watches can no longer be guaranteed and is not covered under the watch's warranty. We do not recommend getting a vintage watch wet, even one that was originally designed to be waterproof.

To get an idea of how this watch will look on the wrist, please use the Watch Sizing Guide


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