Four one-of-a-kind gem-set Rolex Oyster Perpetual Cosmograph Daytona watches sold for a combined $49,467,260 (about £37.3 million) at a charity auction staged by Phillips in London on September 28, 2026 — the single largest consignment ever to be offered for a charitable cause at auction. All proceeds go to the Federer Foundation, which funds early-childhood education in Southern Africa and Switzerland, and Re:wild, the conservation organisation founded by Leonardo DiCaprio. Each of the four "Four Seasons" timepieces was donated by Rolex in the brand's centenary year of the Oyster case and auctioned by Phillips deputy chairman Aurel Bacs. Summer, in 18-karat Everose gold with a turquoise dial set with rose-cut rubies and pink sapphires, led at $13.65 million; Autumn, in yellow gold with mookaite and chrysoprase set with green tourmalines, made $13.52 million; Winter, in 950 platinum with a blue opal dial, lapis lazuli and sapphires, fetched $13.25 million; Spring, in white gold with chrysoprase and lepidolite and purple sapphires, brought $9.01 million. The watches are fitted with the Calibre 4131 movement and represent the first gem-set Daytonas of their kind. Rolex's decision to donate the quartet outright, rather than consign them conventionally, turned the sale into a record-breaking philanthropic gesture, and bidders responded in kind, pushing the total past $49 million. The result sets a new high-water mark for charity auctions in horology, pairing two of the most bankable names in sports and conservation with one of the most collected watch references in history — proof that the upper reaches of the watch market can still be mobilised for causes beyond collecting.