The 20 most expensive watches to go under the hammer on an online auction site have been revealed, as a scarcity in brand-new luxury watches fuels a surge in bidding for second-hand timepieces.

So, if we exclude the charity category, this Patek 1518 coming up for sale could take the crown as the most expensive wristwatch ... As renowned vintage watch dealer Matthew Bain told Robb Report ...

However, most tourbillon watches from reputable brands range from $100,000 to several million dollars. More from So Expensive A tourbillon (French for "whirlwind") is a centuries-old mechanism ...

Earlier, he was also spotted wearing one of the most expensive limited-edition Billionaire III watches adorned with 714 diamonds from Jacob & Co. It is worth a jaw-dropping ₹41.98 crores.