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Longines Ultra-Chron High-Frequency watch (1968) 7951-15270516

7951-15270516Ø 35mm

Serviced and revised by Longines Heritage workshop

Collector's Corner

The long and rich history of Longines is written into each of the brand’s design. Each piece produced over the years is part of the Swiss watchmaker identity, a historical legacy that Longines has always strived to preserve and highlight.

  • Watch type

    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.

  • Serial No

    15270516

  • Production date

    1968

  • Sale date

    In 1969 to the company Urania Handels A/B, Sweden.

  • Documents

    Certificate of authenticity by Longines

  • Dimension

    Ø 35mm

  • Case message

    Stainless steel round case, the back is engraved with AB STATSGRUVOR - 25AR

  • Material

    Stainless steel

  • Description

    Silvered dial with applied steel indexes, date window placed at 3 o'clock, applied Ultra-Chron symbol, silvered winged hourglass logo and black Longines signature

  • Dial color

    Silver

  • Movement Type

    Automatic

  • Caliber

    431

  • Functions

    Indication of hour, minute, second and date.

  • Movement

    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

    19 mm

What makes this time piece exceptional

What makes this timepiece exceptional

With its cushion-shaped case and fluid lines, this chronograph has been designed for divers and timekeepers. Its oversized case allows you to easily read the graduated bezel as well as the large tenths of a second and minute counter. Covered with solid mineral glass, the case can withstand a pressure of 20 bars, allowing the diver to descend to a depth of 200 meters. This chronograph bracelet patented by Longines is also equipped with a second hand with a graduated "Vernier" scale at its tip, for quick and precise reading to the nearest tenth of a second. The chronograph movement manufactured by Longines also includes a flyback mechanism.

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About restoration

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