In this guide, we’ll walk you through everything you need to know about Audemars Piguet serial numbers, including how to locate them and  how to decode them in order to date an Audemars Piguet (AP) watch.

Where Can I Find My Audemars Piguet Serial Number?

Each watch manufactured by Audemars Piguet has a unique serial number, which you will find on the case back. You will also find it on your warranty card and certificate.

Audemars Piguet produces approximately 40,000 watches each year, and each timepiece is assigned a unique serial number located on the caseback.

Since 1975, the serial numbering system has included a letter prefix, which changes after every 100,000 watches produced. By taking into account the annual production of around 40,000 watches, we can estimate that the letter will typically change every two and a half to three years.

This system allows us to roughly estimate the year of manufacture by comparing the serial number on your watch to others. For example, a watch with a serial number that follows a previous one can generally be assumed to have been made around three years after the last one in the sequence.