What is the rarest AP watch?

What is the rarest AP watch is hard to determine as supply and demand for timepieces vary over time. However, several models in Audemars Piguet's Royal Oak collection are highly sought-after and often difficult to find. They include the Royal Oak “Jumbo” Extra-Thin 15202ST, the Royal Oak “Jumbo” Extra-Thin 15202IP and the Perpetual Calendar Black Ceramic 26579CE.OO.1225CE.01. On 1stDibs, shop a large collection of Audemars Piguet watches.