Audemars Piguet
1955: Audemars Piguet ref. 5516, the First Perpetual Calendar Wristwatch with Leap Year Indication
Audemars Piguet
1955: Audemars Piguet ref. 5516, the First Perpetual Calendar Wristwatch with Leap Year Indication
However, Audemars Piguet was the first to bring the leap year indicator to wristwatches – a feature formerly seen only in perpetual calendar pocket watches – with the ref. 5516.
Now this was in a time when Audemars Piguet had yet to establish a reference numbering system with which they could track their collection of watches. By the time a system of reference numbers was established these three early 1950s perpetual calendar sans-leap year indicator were all designated ref. 5516.
We take it for granted today, but truth be told, a complicated calendar wristwatch that’s able to accurately track the months with 30 days versus 31 days and yet be able to differentiate the years when February has 28 days versus 29 days, but doesn’t have an indicator to tell whether it is or is not a leap year can’t prove to be quite confusing.
There were only three pieces produced, all of which are said to have slight dial variations, but are all identifiable by their moon phase aperture at 12 o’clock and the 48-month subdial with leap year indication at 6 o’clock.
For greater legibility, the 48-month subdial was supplemented by a 12-month subdial at 3 o’clock that displays each month with greater clarity. These three watches were put into production in 1955 and delivered in 1959.
Audemars Piguet has recorded that three of the six watches initiated in 1957 are now part of the brand’s Heritage Department, one of which is even has a double signed, Tiffany dial.