According to the Archives of Audemars Piguet, the present watch with cal. 18''' SMCRCQV movement was sold to their retailer Gübelin on 3 September 1930.

It is a fine example of one of the "Grand Complication" watches made by Audemars Piguet in the 1920s, distinguished by their quality and elegant design.

As a rule, an Audemars Piguet “Grand Complication” watch has certain obligatory features to qualify it for the title. These include the split seconds chronograph, patented by Louis Perrelet in 1827, it became one of Jules Audemars specialities from the start; a perpetual calendar and a minute repeater. Furthermore, all Audemars Piguet grand complication watches feature a moon phase indicator in addition to the three main complications.

The 10 complications
The present timepiece impresses with the following 10 complications, in addition to the essential timekeeping functions such as hours, minutes and seconds which are not considered complications:

1. Minute repeater
2. Perpetual Calendar
3. Four year cycle
4. Days of the month
5. Days of the week
6. Months
7. Moon phases and age
8. Chronograph
9. Split seconds function
10. Chronograph register

E. Gübelin was founded in 1854 and has always been a family enterprise. Located in Lucerne, Switzerland, the renowned company has been manufacturing and retailing superior quality watches and clocks ever since. The firm was one of Audemars Piguet's most important clients in the first quarter of the 20th century and watches supplied to them were bearing exclusively the Gübelin signature, such as the present example. This at the time common practice had been agreed by contract, stipulating the omitting of Audemars Piguet's signature, with the exception of the serial numbers.