Introducing – A Duo of Audemars Piguet´s Openworked Perpetual Calendars, Powered by the Latest Calibre 7139

A perpetual calendar is a complication very much dear to Audemars Piguet. Since the mid-20th century, the manufacture in Le Brassus has offered many variations on how this “celestial” mechanism could be presented, displayed and used. From the world’s first leap-year perpetual calendar wristwatch in 1955, to the ultra-thin automatic QPs of the late 1970s, […]