Timeless Aesthetics – Eternal Functionality
The grande complication of the perpetual calendar is both highly demanding from a mechanical viewpoint and an expression of the utmost in the watchmaker’s art. Unlike an ordinary “full calendar”, a perpetual calendar always shows the correct date and requires no manual adjustment, not even at the end of a month with fewer than 31 days and also not at the end of February in a leap year. It accordingly jumps directly from 30 June to 1 July and from 28 February to 1 March, except in a leap year, when it automatically shows 29 February.
The mechanism which supports this function requires complexly shaped rockers and cams that mechanically pre-program the variously long months and also add a 29th day to February once every four years. If the mainspring of the Montblanc Meisterstück Heritage Perpetual Calendar is kept sufficiently wound, this timepiece’s calendar will require no manual adjustments until the year 2100. If this watch is