Ulysse Nardin San Marco Big Date Gmt

Payment via Chrono24's secure Escrow Service

Thanks to the Chrono24 Escrow Service, your payment is fully covered. We keep your money in our escrow account for 14 days after delivery of your watch. Thus, you have time to carefully inspect your order knowing your money is safe in our account. Only then do we send the money to the dealer.

Commitment to Authenticity

Our promise: Every new and used watch on Chrono24 is authentic. Our dealers are required to inspect each watch's authenticity and may only list original timepieces. However, should issues arise, you have 14 days upon delivery of your order to contact our support team and get your money back.

14-day money-back guarantee

If the watch arrives and is defective or not as the seller described, you have 14 days to initiate a return and receive your money back.

Strict dealer guidelines

In the interest of security, dealers on our marketplace must follow a strict set of rules. Before a professional dealer can sell on our platform, they must provide us with their photo ID, commercial register entry, business address, and tax number. Furthermore, we require all dealers to follow our strict dealer guidelines.

Insured shipping

Dealers ship every order fully insured, so you can make both domestic and international purchases risk-free.

Chrono24's quality & security team

Our 40-person quality & security team works hard to detect suspicious listings and address issues before they arise, allowing you to focus on what's most important – finding the right watch!