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1972 Longines Vintage Large Retro Ultra Chron Officially Certified Chronometer - Stainless Steel



PRISTINE Merchandise is in “like new” condition. There are no signs of wear or any other visible imperfections.  EXCELLENT Merchandise is in exceptionally good condition with very little wear. Any imperfections are described in detail.  VERY GOOD: Merchandise is in very good condition for its age. Older items may exhibit very light patina and wear relative to the age of the product, and more contemporary items will be just short of “excellent”. GOOD: Merchandise is in good condition and typically will appear mildly to moderately used. There may be some surface scratches and/or other imperfections. Older items may exhibit patina and wear related to their age. Please review the item listing for specific details regarding condition.


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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 36,000 beat per hour pace, giving it the ability to run incredibly accurately. (Most vintage watches beat 18,000 times per hour or slightly more.) 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 rare officially certified chronometer Ultra Chron. While many Ultra Chrons performed with COSC specs, few were actually submitted for chronometer certification. In many respects, this watch would have been among the best of the best when it came to accuracy in a widely-produced watch at the time. Adding to it rarity is the fact that it's the only example we've ever seen done with this unusual case design. It is all original and in beautiful condition. Our watchmaker has just performed a partial servicing on it. For the finishing touch we have equipped it with an expensive new crocodile strap with Cartier lining.


Model: Ultra-Chron, Ref. 3200

No: 51,253,894

Functions: Hours, Minutes, Automatic, Sweep Seconds, Semi-Quick Set Date

Dial: Silver, steel baton indexes topped black, luminous at the primary hours, signed Longines, original, just short of mint condition with light toning of luminous

Hands: Original, steel luminous batons

Movement type: Longines cal. 6652, high-grade, self-winding, 28,800 fast beat balance system for greater accuracy, rhodium plated, 360 degree winding, 25 jewels, shock resistant

Bracelet: Crocodile, fully stitched, padded, soft Cartier lining, brand new and unworn (watch will come with a silver tone buckle installed)

Width between lugs: 24mm

Crystal type: Acrylic, mint condition

Return Policy: 7 days from the day it is received

SKU: 21-163992
Accompanied by: Longines
Bracelet/Strap: Crocodile
Color: Silver
Watch Movement: Automatic
Country of Origin: Switzerland
Authenticity Details: Longines
Case Dimensions (in mm): 41mm wide (excluding crown), 37mm long lug tip-to-tip
Primary Material: Stainless Steel

Domestic and international shipping is by FedEx. All shipments are fully insured.

Please contact Portero Customer Care Department for a return authorization, and ship back item within 7 days of receipt. Items must be properly packaged in comparable box, and in unworn condition.