This spring, Monaco Legend Group will offer one of the most historically significant and exclusive modern Rolex watches ever made; a platinum Rolex Cosmograph Daytona reference 16516. Powered by the legendary Zenith El Primero calibre 4030 and cased in solid platinum, it is believed to be one of just four examples known to exist. Among those, it holds a unique place in history, as this was the very first watch from the now-famous 16516 quartet to ever surface publicly.
With its black Tahitian mother-of-pearl dial, applied Arabic numerals, and very importantly its full complement of original box and papers, this timepiece represents the rarest combination of material, design, and provenance in the world of modern Daytonas. It will be offered as a star lot in our April 2026 Exclusive Timepieces auction in Monte-Carlo.
Made for a Chairman
The platinum 16516 was never a commercial release. It does not appear in any catalogue, brochure or product list. Instead, the watch was conceived as a special commission under the leadership of Patrick Heiniger, Rolex’s third CEO and the man widely credited with turning the company into the vertically integrated powerhouse it is today. Heiniger was known for his personal love of platinum watches, as demonstrated by the pièce unique platinum Yacht-Master commemorating the 10 millionth officially certified Rolex chronometer that was offered at auction by MLG in 2023. Commissioned under the direction of Patrick Heiniger, the watch is a one-off masterpiece with full platinum construction, a custom dial with sapphire and diamond indexes, and a specially engraved rotor marking this historic milestone.
It is believed that he ordered four examples of the Zenith-powered Daytona in platinum for private gifting. The present watch was one of those four and was given as a personal wedding gift to Francesca Gobbi, a member of the Gobbi 1842 family, one of Rolex’s most storied Italian retailers, and her husband Romain Sardou, the French novelist and screenwriter. The engraved case back reads “Francesca – Romain, 16.10.1999”, commemorating their wedding day. Over the years, Sardou was often photographed wearing the watch, which accounts for its honest and well-documented history of use.
Interestingly and importantly, all examples are A-serial watches, dating them to 1999 which was the last year of production of the Zenith Daytona.
A Watch That Made History
This very watch is not just one of the four platinum 16516s ever made, it was the first to reveal the existence of the reference to the world. When it appeared at auction in 2018, it stunned collectors and experts alike. Its platinum case, confirmed by hallmarks on the lugs and inside the case back, is matched by a platinum folding clasp marked with a “U” production code for 1998/1999. The watch also features matching platinum screw-down pushers and crown, and an engraved reference number between the lugs confirming the unique “16516” designation; with the final digit “6” used by Rolex to indicate platinum.
