Watch Paparazzi

Entrepreneur Christian Boros spotted wearing Patek Philippe

Christian Boros, the German entrepreneur and art collector behind the legendary Boros Bunker private museum in Berlin, was recently spotted wearing a Patek Philippe Aquanaut Ref. 5066J — the yellow gold iteration of Patek's sport-casual line, and a piece that rewards careful attention from anyone serious about the brand's history.

The Aquanaut was introduced in 1997, arriving just over two decades after the Nautilus had redefined what a luxury sports watch could be. Where the Nautilus carried Gerald Genta's architectural gravitas, the Aquanaut offered something lighter in spirit: a rounded octagonal case, a tropical-patterned dial, and — crucially — a composite rubber strap, the first of its kind on any Patek Philippe. The Ref. 5066 family followed the original 5060 series, refining the case proportions and dial execution while retaining the same cal. 315 S C automatic movement, a self-winding calibre with a 45-hour power reserve, beating at 28,800 vph. The 5066J renders the case in 18k yellow gold, giving the design a warmth that contrasts interestingly with its sporty intentions.

From a collector's standpoint, the 5066J occupies a nuanced position. The Aquanaut's early commercial struggles — the initial 1,000-piece run of Ref. 5060A and 5060J moved slowly — make surviving first and second-generation references genuinely interesting to track. The 5066J, produced through the early 2000s before the line evolved into the current 5167 family, represents a transitional chapter: more refined than the debut models, not yet the global phenomenon the Aquanaut would become. Yellow gold Aquanaut references have historically traded at a discount to steel on the grey market, though that gap has been narrowing.

Boros's taste runs to the conceptual and the structurally rigorous — qualities that map neatly onto Patek Philippe's own design philosophy. His choice of the 5066J rather than a more conspicuous steel reference signals collector literacy: this is a man buying the history, not the hype.

On the secondary market, yellow gold Aquanaut references from the 5066 generation can be found in the $25,000–$40,000 range depending on condition and completeness, sitting well below the stratospheric premiums commanded by current steel Aquanaut production. For a watch that was once hard to sell, that still feels like undervaluation.