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 early, superior all-original Ultra Chron with all of its original accessories - papers, booklets, pad, and even hang tag! It has a truly wonderful retro design with striking dial markers and complementary hands.

Its case is a monococque one-body design which originally had a strong watch-resistance. At 35mm, it is in between the sizes of a Rolex Date and Rolex Datejust model.

It has all of its original parts and is in beautiful condition. Our photos couldn't do it justice.

It bezel and lugs have never been polished - the top sides and ends of the lugs edges are so sharp they could almost cut you. It presents as mint.

Its untouched original dial is just short of perfect mint even under magnification.

One of our watchmakers has disassembled it down to its last screw and cleaned and oiled it. It is running strong and true, keeping very accurate time. While the watch winds fine without any real issue, the reverser wheels on these watches are often not buttery smooth and make for a firm feeling wind, so if you'd prefer not to handwind it could be a good candidate to be put on a watch winder.

For the finishing touch, it comes equipped with what appears to be its original band and buckle.

As mentioned, accompanying the watch all of its original accesories - papers, booklets, pad, and even hang tag.

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.

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. One used to be the watchmaker for an authorized Rolex dealership and was given training by Rolex at their Beverly Hills Service Center.

Manufacturer: Longines
Country of origin: Switzerland
Year built: c. late 1960'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, Remove Bezel to Use 1260 Wrench
Case condition: In beautiful condition. Our photos couldn't do it justice.
Dimensions: 35mm wide (excluding crown), 40mm long lug tip-to-tip
Hands: Original, steel, "pointed batons"
Movement type: Longines Ultra Chrono caliber 431, high-grade, self-winding, 36,000 fast beat balance system for greater accuracy, rhodium plated, 360 degree winding, shock resistant
Jewels: 17 rubies
Width between lugs: 17mm
Crystal: Acrylic, original, excellent condition
Serviced: One of our watchmakers has disassembled it down to its last screw and cleaned and oiled it. It is running strong and true, keeping very accurate time. While the watch winds fine without any real issue, the reverser wheels on these watches are often not buttery smooth and make for a firm feeling wind, so if you'd prefer not to handwind it could be a good candidate to be put on a watch winder.
Timed: Timed to precision on a 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 extremely experienced team of four Master Watchmakers all of whom each have over thirty-five years of experience and a large number of parts. One used to be the watchmaker for an authorized Rolex dealership and was given training by Rolex at their Beverly Hills Service Center.
Box/Papers: BOX - Connoisseur of Time watch presentation box;; PAPERS - Original papers, booklets, chronometer certificate, card, pad, and Tag; New Connoisseur of Time 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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