Longines watch ULTRA-CHRON Chronometer Cal 6651

SPECIFICATION

Reference : Longines ULTRA-CHRON 6651
Movement : 6651
Age : 1969
Case Size : 37mm
Case Thickness : 11mm
Lug to Lug : 40mm
Lugs : 18mm
Condition : Used Longines watch
Box & Papers : No
Case Material : Stainless Steel
Warranty : 12-Months Warranty

POINTS TO MENTION

• In great preowned condition with light wear from use
• Some light scratches on the case
  
• Dial has a few light blemishes
• Fully serviced high Beat 28.800 bph movement
  
• Longines signed Crown
  
• Paired with an unworn grey leather strap 

A BIT OF TRIVA

The Longines Ultra -Chron was launched in 1967 to celebrate the 100 year anniversary of the company. At that time it was the world's most accurate watch. It was advertised within a “minute a month”. Hi-Beat movements started to be brought to market by the likes of Seiko in their Lord Marvel line Cal. 5740C. The faster oscillating balance was designed to be less vulnerable to shock, making it a better timekeeper. A pleasant side effect was the incredibly smooth seconds hand. Beating at 28,800 beats per hour, Longines developed a new lubricant “molybdenum disulphide” which proved to remain on the parts longer than traditional oil lubricants. The Ultra-Chron line ran for nine years. 

The Ultra-Chron was only produced until the mid-1970s, and examples are therefore hard to come by. Despite their rarity, this reference was produced in a variety of case and lug shapes, materials, and dial variations. The thick lugs and cushion-esque overall case shape seen on this example truly set it apart. Not to mention the great dial details.

OUR THOUGHTS

Whenever I look at a fine Longines watch I am amazed at what great value they represent and the history within and this piece demonstrates this perfectly. Coming from an undisputed top quality Swiss manufacturer, you know you are getting an exceptional vintage watch that any collector would be proud of.