Entrepreneur Gustav Magnar Witzøe spotted wearing a Audemars Piguet

Gustav Magnar Witzøe, the Norwegian entrepreneur and SalMar fish-farming heir whose net worth has consistently placed him among the world's youngest billionaires, was recently photographed wearing what appears to be the Audemars Piguet Royal Oak Chronograph reference 26331BA.OO.1220BA.01 — the 41mm yellow gold variant fitted with a striking blue dial. The sighting underlines a growing pattern among the ultra-young wealthy: eschewing ostentatious fashion in favour of horological substance on the wrist.

The Royal Oak Chronograph 26331BA is built around AP's calibre 2385, a column-wheel integrated chronograph movement beating at 21,600 vph with a 40-hour power reserve. The 41mm case is crafted entirely in 18k yellow gold, featuring the signature octagonal bezel secured by eight hexagonal screws — a Gerald Genta masterstroke first introduced in 1972 that remains as architecturally provocative today as it was then. The blue 'Grande Tapisserie' dial offers exceptional depth, with gold-toned applied indices and three blue sub-registers arranged in the classic tri-compax layout.

Within the Royal Oak Chronograph family, yellow gold references occupy a particularly coveted position. The warm metal contrasts sharply against the blue dial in a way that stainless steel cannot replicate, and production numbers in precious metal are substantially lower than the steel variants. Collectors regard the 26331BA as a definitive statement piece — dressy enough for a boardroom, robust enough for everyday wear, and historically significant as a direct descendant of the original ref. 5402.

Witzøe, born in 1993, inherited a substantial stake in SalMar ASA from his father Gustav Witzøe Sr. and has parlayed that position into broader investments. He represents a new archetype of watch consumer: young, globally connected, and drawn to timepieces with genuine technical and historical pedigree rather than novelty. The AP Royal Oak Chronograph in yellow gold fits that profile precisely — it is neither flashy nor understated, simply correct.

On the secondary market, yellow gold Royal Oak Chronograph references consistently trade above retail, with 26331BA examples commanding grey-market premiums in the $70,000–$80,000 range depending on condition and provenance. Authorised dealer waitlists for precious-metal Royal Oaks remain largely theoretical for new clients, making grey-market acquisition the practical reality for most buyers — even those with nine-figure balance sheets.