Tom Brady's Royal Oak Chronograph 26240ST 50th Anniversary

Audemars Piguet’s Royal Oak has spent half a century proving that one design, executed with sufficient conviction, can define a manufacture’s identity more completely than a catalogue of hundreds. Gerald Genta’s 1972 drawing, produced famously overnight, gave the watch industry its first luxury sports watch in stainless steel, and the design’s durability is evidenced by the fact that the 26240ST, introduced fifty years later, is recognisably the same watch. The octagonal bezel, the exposed screws, the integrated bracelet, the tapisserie dial: these elements have been refined, enlarged, and re-engineered across five decades, but never fundamentally altered, because there is nothing to alter. The design was right from the start.

The introduction of the Calibre 4401 in the 26240ST marked a milestone that went beyond anniversary celebration. For decades, Audemars Piguet’s Royal Oak chronographs had relied on movements sourced from or derived from external suppliers. The 4401 changed that, bringing the chronograph complication fully in-house with a movement that matched or exceeded the technical specifications of any integrated automatic chronograph on the market. The 70-hour power reserve, the flyback function, the column wheel and vertical clutch: these are not features added for marketing differentiation. They are the mechanical fundamentals of a chronograph movement built without compromise, by a manufacture that decided the Royal Oak deserved nothing less.

That this particular 26240ST was chosen by Tom Brady, a figure whose career has been defined by a similar refusal to compromise, is a coincidence that feels closer to inevitability. The Royal Oak has always been a watch for people who operate at the highest level of their field and who recognise quality as a function of substance rather than ornamentation. Brady’s ownership of this watch does not make it more mechanically capable. But it places it within a narrative of excellence that enhances its meaning as a collector’s object, and that meaning, once attached, does not diminish with time.

The Royal Oak Chronograph Ref. 26240ST was introduced in 2022 to mark the 50th anniversary of Gerald Genta’s original Royal Oak design, and it represented the most significant update to the Royal Oak chronograph in the model’s history. The previous generation, the Ref. 26331ST, had used the Calibre 2385, a movement derived from a Frederic Piguet base that Audemars Piguet had relied upon for decades. The 26240ST replaced it with the Calibre 4401, Audemars Piguet’s first fully in-house automatic chronograph movement, fitted with a flyback function, a column wheel, a vertical clutch, and a 70-hour power reserve. The upgrade was not cosmetic. It was a fundamental change in the mechanical identity of the Royal Oak chronograph, and the 26240ST is the watch that delivered it.

The khaki green grande tapisserie dial is the detail that gives this particular reference its visual character. The grande tapisserie pattern, a grid of small raised squares stamped into the dial surface, is the Royal Oak’s signature texture, and in khaki green it takes on a depth and complexity that the more familiar blue and grey versions do not replicate. The green shifts in tone depending on the angle and the light: cooler and almost grey in shadow, warmer and more saturated in direct sunlight, and in certain conditions appearing closer to olive or forest green. The three chronograph subdials, a 30-minute counter at nine o’clock, a 12-hour counter at three o’clock, and a running seconds at six o’clock, are recessed into the dial in a darker shade of green, creating a tonal contrast that is subtle but legible. The date window sits at the outer edge of the dial between four and five o’clock, repositioned from the more conventional three o’clock placement of the previous generation, a change that improved the dial’s symmetry. The applied hour markers and Royal Oak hands are in white gold, and the overall impression is of a sports chronograph that is refined enough for formal contexts without surrendering any of its mechanical credibility.

The 41 mm stainless steel case retains every element of Genta’s original design language: the octagonal bezel with its eight hexagonal screws, the integrated bracelet flowing directly from the case’s flanks, and the alternating brushed and polished surfaces that give the Royal Oak its characteristic play of light. The case is 12.4 mm thick, slightly more than the previous generation, a consequence of housing the new Calibre 4401 with its flyback mechanism and larger mainspring barrel. The sapphire caseback displays the movement in full, including the 22k gold oscillating weight engraved with the “50 Years” logo that was fitted to all Royal Oak watches produced during the anniversary year. The bracelet, with its flat, interlinked segments and double-folding clasp, remains one of the most comfortable and visually integrated designs in luxury sports watchmaking.

The Calibre 4401 deserves particular attention, because it represents a level of investment by Audemars Piguet that few manufacturers are willing to make. Developing an in-house automatic chronograph movement from scratch is one of the most expensive and technically demanding undertakings in watchmaking. The 4401 comprises 381 components across 40 jewels, operates at 28,800 vibrations per hour, and delivers a 70-hour power reserve, a significant improvement over the 50 hours of the outgoing 2385. The flyback function allows the chronograph to be reset and restarted with a single push of the four o’clock button, without the stop-reset-start sequence that a conventional chronograph requires, a feature valued by anyone who uses the chronograph for successive timing intervals. The vertical clutch engages the chronograph without the slight hand-jump that a horizontal clutch can produce, and the column wheel provides a mechanical precision in the pushers’ feel that cam-actuated chronographs cannot match. The free-sprung balance, supported by a full balance bridge rather than the more common single-point balance cock, provides superior shock resistance and positional stability.

But no amount of mechanical specification explains what makes this particular 26240ST different from any other. What makes this watch different is that it was Tom Brady’s.

The provenance is documented beyond any reasonable doubt. The original invoice, included with the watch, is addressed to Tom Brady and dated 23 May 2022. The watch was consigned directly by Brady to Sotheby’s for “The GOAT Collection,” a dedicated sale of watches and memorabilia from his personal collection, held in New York in December 2024. The auction was one of the most closely followed watch sales of the year, attracting over 800 registered bidders and realising a total of over $9 million across all lots. This Royal Oak, Lot 7, carried a pre-sale estimate of $30,000 to $60,000 and sold for $114,300, nearly double its high estimate and well above the market value of a standard 26240ST, a premium that reflects the value the market places on Brady’s ownership.

Tom Brady’s relationship with watches, and with Audemars Piguet in particular, is well documented. He has been one of the brand’s most prominent ambassadors, and his personal collection, revealed in full through the Sotheby’s sale, demonstrated a taste that ranged from rare vintage Rolex to Richard Mille to multiple Audemars Piguet references. The 26240ST in khaki green was purchased during his final active season in the NFL, in May 2022, the year the Royal Oak celebrated its 50th anniversary and the year before Brady’s final retirement. It is a watch that belongs to a specific moment in both the brand’s history and Brady’s career, and that temporal specificity is part of its value.

For collectors, the opportunity to acquire a watch of this provenance is rare in a literal sense. Celebrity-owned watches appear at auction with some regularity, but watches owned by figures of Brady’s stature, with complete documentation tracing directly from the manufacturer to the owner, with the auction history of a major Sotheby’s sale attached, are genuinely uncommon. This is not a watch that was “associated with” or “believed to have been owned by” a public figure. It is a watch with an invoice bearing Tom Brady’s name, sold by him, through the world’s most prominent auction house, with the full weight of Sotheby’s provenance verification behind it. The 26240ST is an excellent watch in its own right. This one is also a piece of sporting and horological history.