Today's offering showcases this complicated Certified Pre-Owned automatic Speedmaster, ref. 3521.80. Besides the chronograph the watch also possesses a triple date calendar and twenty-four hour time indication.

The case and bracelet both carry a traditional speedy look, although the bezel is of the sleeker steel embossed variety, and the royal blue dial with all of its functions is quite striking.

Note that it appears lighter blue under the bright photography lights. In person it is Omega's rich traditional royal blue.

It is the more desirable second generation of this model with Hypocampus case back.

It is 100% Omega down to the waterproofing seal and presents as just short of perfect mint condition - it presents as about a 9.6 out of 10. It presents as mint on the wrist.

Any needed servicing has been performed, and we have timed it in five chronometer positions.

Included with the purchase is a one-year C.O.T. international warranty on the movement and its function, a custom printed Connoisseur of Time Certificate of Authenticity, and a new timing certificate attesting to its performance.

Speedmaster:
In 1957, Omega unveiled a chronograph that was a true technological marvel, the Speedmaster. Its incredible durability and accuracy would not only win it accolades around the world and the distinction of being the first watch to be worn on the moon, it would accomplish something far more important, guiding the crew of Apollo 13 safely back home after their malfunctioning electronic systems had shut down.

• Manufacturer: Omega
• Country of origin: Switzerland
• Serial no.: 56,507,826
• Model: Omega Speedmaster, Ref. 3521.80
• Functions: Hours, Minutes, Automatic, Chronograph, Day, Date, Month, 24 Hour Indication, Subsidiary Seconds
• Designed for: Men
• Dimensions: 39mm diameter (excluding crown), 44.5mm long lug tip-to-tip
• Case material: Stainless steel 
• Case markings (outside): Speedmaster
• Case condition: Just short of perfect mint with the slightest remnants of wear and very light signs of having been polished. Presents as mint on the wrist.
• Dial: Royal blue with luminous baton indexes, outer minute/seconds and 1/5th seconds divisions, outer date track, sunk subsidiary dials for the seconds/24 hour indication, the 12-hour and 30-minute registers, apertures for the day and month, original, mint condition. Note that it appears lighter blue under the bright photography lights. In person it is Omega's rich traditional royal blue.
• Hands: Luminous steel “baton” hands
• Movement type: Omega caliber 1151, 25 jewels, rhodium plated, shock resistant
• Band: Speedmaster, stainless steel, sized to fit a wrist up to approx. 7.5 inches, adjustable, just short of mint condition
• Crystal: Sapphire glass, mint condition
• Timing: Timed to precision in five chronometer positions on a state-of-the-art computerized system. 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 and a large number of parts.
• Warranty: 1-year international warranty. Please email concierge@cotwatches.com for details.
• 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