Renis Genève - Valjoux 7736 Racing Chronograph - Circa 1970

In 1968, Graham Hill’s Lotus arrived at the Spanish Grand Prix wearing red, white and gold instead of British racing green. Formula One had opened itself to commercial sponsorship, and within a few seasons the cars looked completely different. National colors gave way to hard blocks of paint, stripes and graphics meant to be recognized instantly as they came past at speed.

The same turn toward stronger contrast was appearing on sporting chronographs. Large steel cases replaced many of the smaller round forms of the previous decade. Black dials were cut apart by pale registers. Orange and red moved onto timing hands and scales because those were the things that had to be found quickly. Heuer’s Carreras and Autavias, Breitling’s Top Time and dozens of smaller Swiss chronographs all began speaking some version of that language.

This Renis uses that same visual language. The dial is black, with three pale registers sitting inside chrome outer rings and a tachymeter running around the edge. The right-hand register carries a hard flash of neon orange, echoed by the central chronograph hand and the small accents around the hour markers. Nothing is decorative by accident. The bright parts are concentrated around the functions used for timing. Renis was one of the brands owned by Aetos Watch SA. In 1969 SSIH acquired Aetos, bringing Renis into the same group as Omega, Tissot, Lemania and Lanco.

The tachymeter turns elapsed time into speed. Start the chronograph over a known distance, stop it at the end, and the central hand points directly to the average speed on the scale around the dial. Against a black field, that orange hand is difficult to lose. The three registers extend the timing beyond a single lap or sprint, giving running seconds, elapsed minutes and a twelve-hour recorder.

Behind it is a Valjoux 7736, one of the defining manual-wind chronograph movements of the period. Introduced at the end of the 1960s, it became one of the engines behind the new generation of large, colorful Swiss sports chronographs. Here it gives the Renis the full three-register layout without crowding the dial, leaving the color and scale to do the visual work.

The stainless-steel tonneau case has survived especially well. Its broad brushed upper surface still meets polished sides along clear, sharp edges, and the original geometry has not been softened into a rounded shape. The dial is exceptionally clean, the printing remains crisp, and the luminous material has aged warmly. The acrylic crystal is clear.

The watch is fitted to a black perforated rally strap. It runs, the chronograph functions, and its service history is unknown.

Terms: Please review all photos carefully as they are a part of the listing. This is a vintage timepiece. Accuracy, power reserve, and water resistance are not guaranteed. Vintage watches may require periodic service. Performance can vary with wear, temperature, and position.

All sales final.