Case: Dial: Movement:
Overall excellent, attractive condition, original dial
Serviced and revised by Longines Heritage workshop.
Date Of Sale
In 1969 to the company Urania Handels A/B, Sweden.
Date Of Product
1968
Type Of Watch
Stainless steel watch in a purist design, powered by a high-frequency movement, caliber 431. Longines guaranteed at its launch in 1967 an accuracy of a minute a month or two seconds per day. This model (ref. 7951) is part of the Ultra-Chron collection and was launched in 1968.
Documents
Certificate of authenticity by Longines
Dimension
35mm
Case message
Stainless steel round case, the back is engraved with AB STATSGRUVOR - 25AR
Material
Stainless steel
Hands Description
Luminous steel baton hands and sweep centre seconds
Dial color
Silver
Movement Type
Automatic
Caliber
431
Functions
Indication of hour, minute, second and date.
Movement Description
Longines mechanical self-winding movement, caliber 431. This 25.60mm caliber features 17 jewels and the balance/balance-spring combination beats at a frequency of 36’000 vibrations per hour.
Material
Leather strap
Size
19mm width
What makes this timepiece exceptional
Longines registered the Ultra-Chron mark in Switzerland on 28 October 1966. The entire line of models in this collection was distinguished from other models by its high-frequency movement. It was one of the most accurate watches of its time in serial production: Its name Ultra-Chron stands for Ultra-Chronometer, which means more accurate than a traditional Chronometer. The Longines Ultra-Chron was the last mechanical watch to equal the accuracy of the electronic tuning-fork watches of its time. But of course without any battery.
What makes this timepiece exceptional
Longines registered the Ultra-Chron mark in Switzerland on 28 October 1966. The entire line of models in this collection was distinguished from other models by its high-frequency movement. It was one of the most accurate watches of its time in serial production: Its name Ultra-Chron stands for Ultra-Chronometer, which means more accurate than a traditional Chronometer. The Longines Ultra-Chron was the last mechanical watch to equal the accuracy of the electronic tuning-fork watches of its time. But of course without any battery.
Restoration by Longines is made up of more than ten meticulous steps calling on all the qualities of our experts. From diagnosis to testing, discover more about Longines workshop services.