This Rolex Day-Date 18239b Tridor with an 18k white gold case and crown mixed with an 18k yellow gold fluted bezel comes with the classic champagne factory set diamond dial. The watch dates back to 1991 and houses the Rolex caliber 3155 movement with a double quickset function. The watch is in excellent condition with a very sharp case, the President bracelet executed in two 18k white-gold outer links and a center link that consists of alternating bands of rose-, yellow-, and white gold with hardly any stretch and the iconic concealed clasp.

As authenticity is one of the most important properties of the Watch industry. Not only do we want to prove that your watch is real, but more importantly, we are being transparent about the way we work.

All our Rolex watches have their authenticity secured and recorded on several blockchains using open source VIDT DAO blockchain technology. Let’s look at the steps involved:

Step 1.
The watch’s authenticity is checked and confirmed by the experts from 11-Fifteen.

Step 2.
11-Fifteen issues and anchors a certificate of authenticity for the watch, containing detailed descriptions and macro photos. The digital fingerprint, or hash, of this certificate is then included into several blockchains, making the document verifiable.

Step 3.
After purchase, the new owner receives the watch and the corresponding certificate in PNG format. The blockchain validated certificate can then be verified by anyone in 5 seconds, with just an internet browser.