What is modern meaning? Audemars Piguet first put the flat-year display on the perpetual calendar watch, so that the perpetual calendar has the present look. Audemars Piguet 5516 is the first perpetual calendar in the modern sense. We can see that at the 12 o’clock position, there is a flat-panel display divided into 4 parts (note that Audemars Piguet puts the date on the outer ring of the dial and indicates with the pointer, Audemars Piguet Royal Oak Perpetual Calendar replica also draws on this layout.
In 1972, Jero Zunda helped Audemars Piguet design the Royal Oak, and then Audemars Piguet relied on the Royal Oak to go all the way to today. It is for this reason that people have neglected a “major invention” of Audemars Piguet. This “major invention” not only affects Audemars Piguet, but also has an important influence on the watch industry. This is the Audemars Piguet calendar based on the 2120/2121 movement. We all know that the 920 movement developed by Jaeger-LeCoultre has not been used in one day. The 920 movement is fully supplied to Patek Philippe, Vacheron Constantin and Audemars Piguet. The Audemars Piguet version of the 920 movement is called 2120/2121 (the 2121 is an automatic tourbillon version). This movement is the thinnest self-winding movement in the 1970s and is only 3.95 mm thick. After the launch of Royal Oak, Audemars Piguet decided to design and manufacture a perpetual calendar module for the 2120 movement. At that time, in the entire watch industry, only Audemars Piguet and Patek Philippe produced a perpetual calendar in a small amount (at the time, Audemars Piguet’s perpetual calendar was “advanced” than Patek Philippe).
In the end, Audemars Piguet created a perpetual calendar module with 159 parts and a complete 2120/2121 movement. At that time, the first watch to use this 21.2 million-year-old movement was Audemars Piguet’s 5548 million calendar. During the following 15 years, according to the data, Audemars Piguet produced 7,219 perpetual calendars. Some people think that the introduction of the Audemars Piguet calendar has helped Audemars have weathered the difficult years of the quartz crisis. The reason is that during this period, the number of employees of Audemars Piguet has not decreased, but has increased to nearly 300. In the 10 years from 1974 to 1984, because the Swiss watchmaking industry was very depressed, two-thirds of the watch-related employees were unemployed, but Audemars Piguet’s situation was not bad. Perhaps part of the reason was due to Audemars Piguet’s research. A new perpetual calendar.
The biggest features of the replica Audemars Piguet Royal Oak Perpetual Calendar 5516 are two, one is a 12-point flat display, and the other is a date display on the outer circumference of the dial (indicated by a large pointer). Later, Audemars Piguet merged the date display with the 12-point flat display on the 2120/2121 perpetual calendar, including the Vacheron Constantin 11.2 million calendar. This led to Audemars Piguet’s perpetual calendar and Vacheron Constantin’s perpetual calendar in fact the same. Nowadays, the most important thing for a watch is the recognition. It is not a good thing that two watches “face”. Audemars Piguet’s new Royal Oak Calendar has been based on the original 2120/2121 million calendars, replacing the original 5516 outer circle calendar with a 52-week weekly calendar, using a large pointer in the center of the dial to let Audemars Piguet The Royal Oak Calendar is unique. In the first two years, when Audemars Piguet launched the new Royal Oak Calendar of the Golden case, I was wondering why I had to add a weekly calendar.