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Unitime | 1765 | steel

Ref. 1765

Regular price

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Unitime | 1765 | steel

Ref. 1765

Regular price

This rare, Breitling 1765 ‘Unitime’ was introduced in the 1960’s, as a tool watch expressly designed for pilots, with this example dating to circa 1967, based on its outer-caseback serial number and '765 CP' case.

The earliest ‘AVI’ references (or ‘765s’), were used by civilian aviators and military Air Forces in the late 1930s. These wristwatches were the first to be launched by the ‘Breitling EIGHT’ Military aviation division; bearing many of the classic hallmarks typically associated with military pilot’s wristwatches. The ‘Breitling EIGHT Air Force’ utilized the latest technical advancements to manufacture highly-specialised equipment, using only materials of the best quality, such as cockpit clocks, oscillographs as well as complicated wristwatches. Post-AVI designation, fewer than 1000 ‘Unitime’ examples are estimated to have been produced.

The reference 765 ‘AVI’ predates Breguet’s famous type ‘XX’, introduced in 1954 and issued to the ‘Armée de l’Air, Aeronavale’ and ‘C.E.V’ (Centre d’Essais en Vol – Flight Test Center). The French military used watches by Breguet, Auricoste and Vixa. The Breitling 765 ‘AVI’, produced in 1953, was seemingly the influential benchmark used throughout the design process of these later examples, emphasizing legibility, waterproofness, and enhanced reliability.

This example, the Breitling 1765 ‘Unitime’, with serial number (127,6XXX) has a round, stainless steel case with large chronograph pushers and an original Breitling, fluted crown. The case measures 41 mm in diameter, denoting it is an earlier example based upon a ‘765 CP’ case, rather than the slightly-larger ‘7650’ case. It has thick straight-line lugs with sharp bevels, retaining exceptional definition. Like all ‘765’ examples, the case-back is screw-down, and features sharply preserved engraving; “1765 Unitime”, along with ‘WATERPROOF - SHOCK PROTECTED - ANTIMAGNETIC - STAINLESS-STEEL’ and the manufacturer's signature.

It features a white Breitling logo, while 'Breitling Geneve Unitime' is referenced on the dial at twelve o'clock. Visible at six o’clock, below the twelve-hour register, a 'SWISS' marking is replaced on the reference 1765 by the letter ’T’, denoting the Tritium luminescent material on the dial. The case features a, bi-directional, rotating bezel with twenty four-hour graduation. 

The chronograph, minute and hour hands are white, giving the dial a nice monochromatic look. The sub-registers at three, six and nine o'clock are the thirty-minute, twelve-hour and the sub-second dials, respectively. The minute-recording sub-register features a luminescent ‘arrow’ hand, ensuring optimal legibility.

The watch carries a manual-winding Venus calibre 178, considered by many as one of the most famous column wheel operated chronograph calibres of all time. The movement features 17 jewels and a modified 24-hour time, beating at 18,000 A/h, with a power reserve of 45-hours. This 'standard' column wheel movement for Breitling Chronographs has a twist; instead of the usual twelve-hour dial, this modified movement has twenty-four hour dial in which the hour hand takes twenty four hours to make a full rotation. The request for the 24-hour modification was first made by US Navy test pilot and astronaut Lt Cmdr Scott Carpenter, who wore a Breitling Navitimer (12-hour version) during the 1950’s.

Viewings can be arranged in Central London by appointment only.

Brand: Breitling
Model: Unitime Ref. 1765
Movement: mechanical manual-winding Cal. 178
Functions: chronograph, hours, minutes, sub-seconds
Features: 24-hour graduation rotating bezel, unrestored dial
Case: 41 mm stainless steel
Crystal: plexiglass
Box & papers: N/A
This Breitling Unitime 1765 is in excellent overall condition. The matte black dial is very well preserved, and has evenly patinated luminous minute markers and hours. The tritium lume on the chronograph, minute and hour hands has aged to a deepening yellow, complementing the patina on the 24-hour markers. The watch comes with a two-year mechanical warranty from A Collected Man.

All of our pre-owned watches have undergone thorough mechanical inspections, including being ultrasonically cleaned, serviced and resealed if appropriate and tested for at least four days, to ensure they meet our highest timekeeping standards. Our pre-owned and vintage watches, unless stated otherwise, are covered by a full or a limited twenty-four month warranty. For example, due to their age, some vintage watches should not be subjected to the same conditions as when they were new. Please see our Terms & Conditions for further information. 

All of our new watches are covered by the warranty from the original manufacturer. Please contact us for further information.

During a period of adjustment, we are unable to ship watches to the EU. We continue to offer express delivery to all other countries.

If ordering from the UK before 1 PM, your watch will be sent the same working day. The courier will depend on the value of the watch, with all watches delivered the next working day.

If ordering from outside Europe, delivery will depend on choice of courier and destination. 

Please note that pre-owned goods (in the United Kingdom) are subject to a marginal rate of VAT, which can not be reclaimed. For further information, please see here.

You can cancel your order without giving any reason, within 14 days from the day the watch has been delivered to you.

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