In 1967, to commemorate the company's 100th anniversary, Longines released the Ultra-Chron, a new line of extremely accurate wristwatches. Depending on the watch, the balance system ticked away at a speedy 28,800 or a blazing 36,000 beat per hour pace, giving it the ability to run incredibly accurately.

Those that beat at 36,000 beats per hour balance system, twice the speed of many traditional watches, ticked away at the fastest beat rate of the era, ensuring exceptional accuracy. Only a few specialist models of watches from a handful of brands beat at 36,000 per hour.

The ad campaign's slogan for this award-winning watch was "A New Standard of Time: Guaranteed Accurate to a Minute a Month." In a world before quartz technology, this was an audacious claim. Ultra-Chron watches were the first widely-produced watches to guarantee this accuracy. And it was proved true, even in "real world" testing conditions.

Today's offering showcases this superior Ultra Chron. It is very pleasing in a number of ways.

It has a truly wonderful retro design with distinctive dial markers, unusual hands, and a thoughtful detail that we can't remember noticing on any other vintage watch - its sunburst finish originates sideways across the dial from the date aperture. When viewed in conjunction with the original satin finish on the lugs, it makes for a particularly pleasing aesthetic.

Its case is a monococque one-body design which originally had a strong watch-resistance. It is full sized with about the same dimensions as a Rolex Datejust.

It is original and in beautiful condition. Its case has never been polished and presents as just short of mint. Its back has never been polished despite what the photos seem to suggest.

Its bracelet presents as mint. And its untouched original dial is mint with lightly toned luminous and only light luminous loss visible under magnification.

One of our Master Watchmakers, who used to be the watchmaker for an authorized Rolex dealer and was given special training by Rolex at their Beverly Hills Service Center to be an authorized Rolex watchmaker, has fully serviced the watch which consists of fully disassembling the movement, carefully inspecting each part, replacing any overly worn components with genuine Longines parts including installing a new date indicator hammer, installing a new mainspring, reassembling and lubricating the movement, and extensive timing testing and regulation (a $895 value). It continues to keep very accurate time.

For the finishing touch we have meticulously detailed it making it ready for immediate enjoyment.

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

• Manufacturer: Longines
• Country of origin: Switzerland
• Year built: c. early 1970's
• Model: Ultra-Chron
• Designed for: Men
• Function: Hours, Minutes, Automatic, Sweep Seconds, Semi-Quick Set Date
• Case material: Stainless steel
• Case markings (outside): Stainless Steel, Use 1175 Wrench, I.K.
• Case markings (inside): Longines, Swiss Made, Acier Inox, 3200
• Case condition: Its has never been polished and presents as just short of mint. Its back has never been polished despite what the photos seem to suggest.
• Dial: Silver, steel retro styled wide boy baton and faceted Arabic indexes, luminous dots, signed Longines, original and untouched with only light luminous loss visible under magnification.
• Dimensions: 35.5mm wide (excluding crown), 40mm long lug tip-to-tip
• Hands: Original, steel luminous with distinctive baton design
• Movement type: Longines Ultra Chrono, high-grade, self-winding, 36,000 fast beat balance system for greater accuracy, rhodium plated, 360 degree winding, shock resistant
• Crystal type: Acrylic, excellent condition
• Serviced: One of our Master Watchmakers, who used to be the watchmaker for an authorized Rolex dealer and was given special training by Rolex at their Beverly Hills Service Center to be an authorized Rolex watchmaker, has fully serviced the watch which consists of fully disassembling the movement, carefully inspecting each part, replacing any overly worn components with genuine Longines parts including installing a new date indicator hammer, installing a new mainspring, reassembling and lubricating the movement, and extensive timing testing and regulation (a $895 value).
• Timed: Timed to precision on a computerized system. It continues to keep very accurate time.
• Warranty: 1-year international 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 extremely experienced team of four Master Watchmakers all of whom each have over thirty-five years of experience and a large number of parts.
• 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