![]() ![]() Heuer caliber 15, an evolution of the famous caliber 11, based on the Buren 1282 with micro-rotor was not designed to attach a chronograph mechanism – this led to the crown at 9 o’clock. During the golden age of automobile racing, a chronograph watch was an essential piece of kit, and many of the racing greats had a Heuer strapped to their wrist. They have large cases, handsome dials, and excellent movements. The name “Autavia” comes from a combination of two words: Automotive & Aviation, they are the archetype of the 60s and 70s Motorsports watches. The first Autavias were dashboard clocks and instrumentation used in automobiles and aircraft, and Heuer recycled the name in the 1960s and applied it to their line of professional racing chronographs. So, yacht timers are used on the countdown and they also denote the remaining time of the race. The start of a regatta is quite different from a race on the ground: the sailboats are positioned before the starting buoy and when the gun goes off, the countdown begins and the competing boats cross the start line 15 minutes later. Yacht timers are also known as yachting chronographs, sailing watchers, or regatta timers and they were designed for the countdown before the start of a sailing race. The steel band reminds me the Rolex Jubilee and was used until the ’90s on the first Formula 1 models. In the 1960s and 1970s, no brand was more prominent in motorsports timing than Heuer. 15640 is basically an Autavia Chronograph cal. ![]()
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