Founded in 1856, Eterna has long been synonymous with Swiss watchmaking of the highest order. With a heritage spanning more than 160 years, the brand is celebrated for its technical innovations, most famously when it revolutionized the market by creating the first wristwatch with an alarm function. Eterna also co-founded ETA—its name derived from “Eterna” with the middle letters removed—which would later become one of the most influential movement manufacturers in the industry. Throughout its history, Eterna has remained a benchmark of fine workmanship and chronometer-grade precision.

The present Eterna chronograph is a particularly attractive example, fitted with a silvered pulsation dial calibrated for 30 heartbeats. Originally developed for physicians, this ingenious scale allowed quick and accurate pulse readings: by activating the chronograph and counting 30 pulsations, the central hand would point directly to the beats per minute on the blue graduated scale. Adding to its period charm, the chronograph subdial features a rare three-minute scale—an amusingly practical detail once used for timing calls in the era of paid telephones.

Preserved in outstanding condition, this watch perfectly illustrates Eterna’s blend of functionality and craftsmanship. It represents not only a fascinating slice of horological history but also an excellent opportunity for collectors to step into the world of vintage chronographs.