Jensen heritage for the next generation


Item description: Making its debut in 1972, was the Heuer Calculator Chronograph; which as its name implies; was created for those occupations where slide rule style calculations were necessary. This stunning new old stock example dates from the mid-1970s. Typical stainless steel case with brushed top surfaces and polished sides and back. The case with its satin silver double calculator / slide-rule bezel, with the outer part rotational. The dial in deep blue with Heuer logo and model name. The dial with correct orange sub-dial strips, along with orange hands. Calender at the 6.00 position. Inside of case-back stamped with the Heuer name. Automatic Heuer Cal.12 movement. The watch complete with a black leather 1970s ‘rally’ style strap, along with a polished stainless steel Heuer branded buckle.


Case size: 45mm x 45mm (15.5mm thick)


Condition report: New old stock condition. Storage age only. The movement has been recently serviced. The timepiece may have been opened, so it should not be used near moisture or water without being checked by a qualified watchmaker. This example of a Heuer Calculator Chronograph, is undoubtedly one of the best and most original examples on the market today.


Background to Heuer: The Heuer Watch Company was founded in 1860 by Edouard Heuer. He opened a watchmaking workshop in St-Imier, a village in the Swiss Jura region. Heuer watches soon became recognized for a high level of accuracy and workmanship. By the 1930s, Heuer was specialising in chronographs, and stop watches, becoming known as a producer of timepieces sporting events. Heuer continued with this theme, and by the 1960s had brought out various timepieces for use within the car racing world. Today, Heuer is particularly remembered for their Heuer Monaco model, which was made famous by Steve McQueen when he wore it the 1971 film, Le Mans.


Special notes: Heuer’s slide rule-clad chronograph, was aptly named the Heuer Calculator Chronograph. While the Breitling Navitimer (the 1806 of which shares the same cal.12 movement)  is probably the best-known mechanical watch with a slide rule bezel, the Heuer Calculator Chronograph is arguably the coolest. The large external bezel is split, allowing the inner part to stay still while the outside part can be rotated to its correct calculating position. The Heuer Calculator Chronograph was a useful accessory for occupations such as architects, engineering, and aviation.


Provenance: n/a


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