In 1926, Rolex forever changed the course of horology with the creation of the world’s first waterproof and dustproof wristwatch — the Rolex Oyster. It featured a revolutionary hermetically sealed case offering protection for the movement, setting a new standard for durability and reliability in wristwatches. 

The Rolex Oyster model worn by British swimmer Merecedes Gleitze wore for her record-breaking swim across the English Channel in 1927 is now going up for auction at Sotheby’s Important Watches sale taking place at the Mandarin Oriental Hotel in Geneva on November 9 this year. 

As the lore goes, in 1927, Rolex put its claim of Oyster being waterproof to the ultimate test. A young British swimmer, Mercedes Gleitze, undertook a daring attempt to cross the English Channel wearing a Rolex Oyster around her neck. For more than 10 grueling hours in frigid waters, the watch endured relentless waves and shifting tides — and emerged ticking perfectly. To commemorate this remarkable feat, Rolex took out a full-page advertisement on the front page of the Daily Mail, proudly declaring the triumph of the waterproof Oyster. More than a marketing milestone, it was the birth of Rolex’s enduring Testimonee concept — a philosophy of proving excellence through human achievement. 

Gleitze’s record-breaking Channel swim faced controversy when another swimmer falsely claimed to have completed the crossing in a faster time. Although the claim was later exposed as a hoax, it cast doubt on Gleitze’s remarkable achievement. Determined to defend her reputation, she announced a second attempt — the 'vindication swim' - which is engraved on the caseback of the to-be auctioned watch. The event drew intense media attention, turning her personal challenge into a national spectacle. And inadvertently, it also brought Rolex into the limelight. 

Today, the Rolex Oyster has advanced to great lengths but yet remains rooted in its storied existence over the years. Undoubtedly, the Oyster is one of the most desired collection among collectors and watch enthusiasts.