A simple guide to better understand how the reference numbers work and their relevance.
You will often come across reference numbers when looking at watches. Each brand will have its own unique numbering system and most of the time you will have trouble deciphering these bunch of numbers.
When it comes to Patek Philippe, the easiest way to decipher the numbering system is to break the numbers down to men’s and women’s.
Below is a four step guide to better understand the relevance of the Patek Philippe numbering system
1. All Patek Philippe numbering will start with either 3xxx,4xxx,5xxx,6xxx or 7xxx
Men’s reference numbers will start with 3xxx, 5xxx or 6xxx
It is worth noting that from the current collection of the 151 watches (2021) there is no reference that starts with ‘3xxx‘ that are available to purchase.
Women’s reference numbers will start with 4xxx and 7xxx
However, there are a few models that start with number ‘5xxx‘ in women’s model numbers (models 5062 and 5072).
2. The reference number is followed with a backslash and a numeric code (xxxx/XXXX)
The following numeric codes indicates the information on the casing, bracelet, type of gem-setting or if engraving has been done.