Today's offering showcases this very cool and rare vintage Seamaster 166.066 so-called "Big Yellow" mens watch.

Believed to be made in only 1971, these watches earned their name because of their bezel and extra-large 42mm case diameter which really fills out the wrist.

This watch is especially interesting because it is the first generation edition powered by an Omega's top-tier caliber 565 movement, and one of the last superior 500's series movements used before Omega began trying to reduce their costs. It has 24 jewels and is one of the finest mass-produced automatic movements from the era.

The second edition Big Yellow, which is uncommon but seen more often, was powered by the less fine 1002 movement. 1950's through 70's Seamasters are great buys as parts are readily available for their well-made movements, and they're not hard to service.

It is 100% original down to the dial, hands, winding crown, crystal, and signed Omega strap!

The case is just short of mint with signs of light polishing to the back. It presents as mint on the wrist. The striking dial which has almost a meteorite effect type texturing is untouched and just short of perfect mint.

One of our watchmakers has disassembled it down to its last screw and cleaned and oiled it making it ready for immediate enjoyment.

Accompanying the watch are its original hang tag and Omega boxes and open papers.

Included with the purchase is a one-year warranty on the movement and its function and a new timing certificate attesting to the watch's performance.

• Manufacturer: Omega
• Country of origin: Switzerland
• Serial no.: 30,336,797
• Year built: c. 1971
• Model: Ref. 166.066, Seamaster so-called "Big Yellow"
• Functions: Hours, Minutes, Automatic, Quick-Setting Date (Push/Pull), Sweep Seconds
• Designed for: Men
• Case material: Stainless steel
• Case markings (outside): Seamaster with hypocampus emblem
• Case condition: The case is just short of mint with signs of light polishing to the back. It presents as mint on the wrist. The edges are very crisp.
• Dimensions: 42mm wide (excluding crown), 44mm long lug tip-to-tip
• Dial: Silver textured, applied steel baton indexes, luminous hour dots, aperture for the date, signed omega Seamaster, original and untouched, just short of perfect mint condition
• Hands: Original, luminous steel batons
• Movement type: Cal. 565, copper colored, self-winding, 24 jewels, lever escapement, monometallic balance, shock-absorber, self-compensating flat balance-spring, micrometer regulator
• Movement markings: Omega Watch Co. Swiss, Twenty-four Jewels, 565
• Jewels: 24 rubies
• Beat frequency: 19,800 BPH
• Band: Signed Omega, leather, appears original and only very slightly worn, with unsigned steel buckle
• Width between lugs: 18mm
• Crystal: Mint condition
• Serviced: One of our watchmakers has disassembled it down to its last screw and cleaned and oiled it.
• Timing: Timed to precision 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 - Omega inner and outer boxes; PAPERS - Omega open certificate card; original hang tag with serial and model number; Custom printed Connoisseur of Time Certificate of Authenticity
• 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