The Inspiration

This watch harks back to the golden age of mid-20th century chronographs and so let’s take a look back at the origins of the story that has inspired this latest Revolution Edition.

You’ll notice immediately that the watch, and its 40mm case profile, pays homage to the vintage waterproof step-case steel chronographs of the 1940s, but packaged in a sleek and modern interpretation. The case is made from 316L stainless steel, which is used by the majority of the luxury watch industry, and waterproof to 30 meters. The crystal is a hardened Dome K1 variety and the movement powering the watch is a Seiko VK64 mechanical-quartz movement with flyback chronograph function, and Undone has configured the movement so you have a 24-hour indicator at three o’clock and a 60-minute chrono counter at nine o’clock. Why? So that there is no quartz ticking seconds hand. When you activate the chronograph, it sweeps just like a mechanical watch.

The star is of course the dial and we took inspiration from those beautiful chronographs from the mid 20th century, which featured truly amazing sector or scientific dials, the most beautifully balanced dials of this era in our opinion. Sector dials first appeared in pocket watches in the 1920s and 30s and then began appearing in wristwatches. Also known as scientific dials, the were highly legible and easy to read accurately. These dials used a central chapter ring divided into sectors, with emphasised chemin de fer minutes and seconds tracks to enhance accurate timings. In addition, they featured enlarged scales such as tachymeters, which calculated the average speed of an object over a fixed distance (e.g. 1km) or pulsometers for calculating pulse rates within 30 beats or even a combination of both.

The chronograph watches of the mid-20th century are truly, jaw-droppingly beautiful and some of the most sought after feature the iconic and aesthetically pleasing sector dials. They were made by a number of brands and some of the most desirable were made by Patek Philippe, such as the references 130 and 1463 dials. Other notable vintage sector dial chronos include the Longines 13ZN, Rolex 2508 and the Omega Calibre 33.3.

The Chronograph Story

If you were to take a poll of collectors’ favourite era for chronographs, I’d bet a hefty wager that the mid-1940s through to the end of the 1960s would be seen as the golden era. The wrist-mounted chronograph can be traced back to the 1920s where it was anything put a regular sight and yet was becoming more and more in demand as a tool for the military and within the scientific community. The watches of the 1920s and early 30s were essentially wrist-mounted pocket watches in gold, silver or plated brass as the quality of steel was not yet good enough for a watch. However, all that changed at the end of the 1930s as British steel became available in a quality and durability that made it perfect for wristwatches; especially for military use where tool watches were in high demand. At this time the telemeter scale was used by the military, to enable them to monitor enemy positions when under fire. Essentially, a General started the chronograph when he saw the flash of artillery and then stop it when he heard the sound of the explosion – he measured the time lapse between light and sound. The telemeter scale was developed to easily tell the operator how far away the explosion had taken place.