Audemars Piguet perpetual calendar and calendar watch are all outstanding exclusivity chronographs, showing the wonderful aesthetics with unmatched quality, and have been favored by collectors with recognition and praise highly for a long time. Perpetual calendar pocket watch was created since the company founded in 1875. According to the record of archives, the first Audemars Piguet full calendar with the moonphrase display was on sale in 1924, while the first perpetual calendar watch was made in 1950, and in the same year sold to the customer.

According to recent research results, there are at least three perpetual calendar watcher in the early 1950 s were made by Audemars Piguet; However, the three watches also lacked a leap year display function. These wrist watches were made before Audemars Piguet replica began to carry out the serial number record, as a result, these new calendar watch then were compiled with the number of 5516.

In 1955, Audemars Piguet was leading group of watches brands, to start producing the world's first perpetual calendar watch series which was featuring an astronomical leap year display. After the Number 5516 watch, Audemars Piguet followed up launching a total of nine classic wrist watches which were deeply acclaimed. These hour meter besides carrying excelsior 36.5 mm watchcase, they also carried a more elaborately meticulously beautiful watch dial. Following the deep creative and cuddly exclusivity wrist watch has triggered a boom, in this series wrist watch, the modelling of the dial again got rid of the stale and bring forth the fresh, although some details of deductive seemingly were trivial, it still let a few pieces of watches look brand-new to be unique hour meter.

Six outstanding watches with the number 5516 were produced in 1957, and on sale during 1963 to 1969. Among which two are owned by Audemars Piguet Heritage sector, and on the watch dial of one can see the logo of dealer Tiffany & Co.