On offer is a rare "doctors watch" housed in silver from Alpina-Gruen, circa 1930s. Produced during the period when Gruen was affiliated with the Alpina sales cooperative in Switzerland and Germany, this model shares its distinctive rectangular case and Aegler movement with the contemporary Rolex Prince. Collectors commonly refer to it as the "Doctor's Watch," a nickname inspired by its oversized subsidiary seconds register, which allowed physicians to quickly and accurately measure a patient's pulse. This example has remained in excellent vintage condition, especially considering its age. The dial shows minimal wear and the case remains strong with distinctive edges and crisp hallmarks. For anyone looking for a seldom seen tank from the Art Deco era, this is a standout example.