To captivate their clientele in vintage times, Longines offered an objet d'art called the mystery dial targeted at the U.S. market. The watches were named after the way the hour marker seemed to mysteriously float around dial, unattached to the rest of the watch, yet keeping perfect time.

We are proud to offer today this uncommon and desirable Thunderbolt dial Mystérieuse with these qualities:

• Mystery dial featuring an 'invisible' revolving disk equipped with a white gold and diamond hour markers, appearing to float around the dial as the watch registers the time
• Distinctive and uncommon thunderbolt dial markers
• Elegant solid 14K white gold case with one-piece design to better protect the movement
• Very high-quality Longines movement, showcasing top tier Swiss craftsmanship from the era

We were fortunate to acquire it in beautiful original condition, fully original down to the dial, hands, and signed winding crown. Its movement is clean.

Our watchmakerk has freshly cleaned and oiled it, and it is For the finishing touch we have equipped it with a brand new crocodile strap 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 custom printed Connoisseur of Time Certificate of Authenticity, and a new timing certificate attesting to its performance.

• Manufacturer: Longines
• Country of origin: Switzerland, made for the U.S. market
• Year built: c. 1960
• Functions: Mystery Time (hours and minutes)
• Designed for: Men
• Case material: 14K white gold
• Case markings (outside): 14K Gold, 1200, Use Admiral 1200 Wrench
• Case condition: Better than excellent with fairly mild wear
• Dial: Signed Longines mystery dial, silver, white gold thunderbolt and diamond markers at the primary hours, original, mint condition
• Dimensions: 34mm wide (without crown), 41mm long lug tip-to-tip
• Hands: Original, white gold dauphine minute hand and diamond hour marker
• Jewels: 17 rubies
• Band: Crocodile, fully stitched, padded, brand new and unworn
• Crystal: Acrylic, domed, vintage, excellent condition 
• Serviced: Yes, freshly cleaned and oiled.
• 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 - 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