The Buser 62A watch movement is an open face calibre available in 18.5 and 19''' sizes, with heights ranging from 4.2 to 5.9mm. It offers options such as a bimetallic screw balance and a Breguet hairspring. This movement features various bridge layouts, two base plates with different dial-feet positions, and two slightly differing setting-lever springs. While the specific assignment of these differences to the FHF groups and calibres is partially known, a comparison of corresponding calibres provides an idea. The Buser 62A movement belongs to the FHF 1 to FHF 16 movement groups, and individual designations begin with FHF 22. Additionally, this movement offers functions including stem winding and setting, as well as a sub-second display. It was commonly used around the 1940s.