Watchmaker Gérald Genta spotted wearing a Audemars Piguet

In May 1978, Gérald Genta, the legendary Swiss watchmaker credited with designing the Audemars Piguet Royal Oak in 1972, acquired his own personal Audemars Piguet Royal Oak Ref. 5402 Jumbo. Rather than accept the factory specification, Genta exercised the privilege of a true master: he commissioned a custom 18k yellow gold octagonal bezel in his own atelier to replace the standard stainless steel bezel. The result was a bespoke two-tone "Jumbo" configuration that existed nowhere else in the world—a statement that the designer of modern luxury steel watches understood that authenticity sometimes requires personal revision.

The Audemars Piguet Royal Oak Ref. 5402 introduced in 1972 remains one of watchmaking's most consequential designs. The 39mm Jumbo case, machined from stainless steel, features Genta's iconic octagonal bezel with integrated lugs and a matching Oyster-style three-piece bracelet. The anthracite petite tapisserie dial—a distinctive woven texture that catches light differently at each angle—became the visual signature of early Royal Oak production. Inside, the calibre 2121 automatic movement, visible through a transparent caseback, operates at 21,600 vph with a power reserve of approximately 40 hours. Water resistance reaches 50 meters, adequate for daily wear but not designed for diving.

Genta's personal modification elevates this reference beyond its already exalted status among collectors. The custom 18k yellow gold bezel transforms the Ref. 5402 from a steel sports watch into a precious-metal hybrid, blending the Royal Oak's revolutionary design language with the warmth of gold. Few authenticated examples of Genta's own vintage pieces surface publicly; fewer still carry such deliberate customization by the designer himself. This particular watch represents not merely a timepiece but a creative statement—evidence that even the architect of the luxury steel watch saw value in gold.

The Royal Oak Ref. 5402 defined an entire genre and influenced decades of sports-watch design across the industry. Genta's decision to enhance his own example with a gold bezel demonstrates that masters of design remain restless innovators. Where collectors today chase factory-sealed waiting-list references, this watch proves that the man who invented the modern integrated-bracelet sports watch valued personal vision over factory purity. It is, by any measure, the ultimate expression of the Royal Oak philosophy: bold, unconventional, and utterly uncompromising in its pursuit of horological excellence.