Watch Paparazzi

Royal Joaan Bin Hamad Al Thani spotted wearing Patek Philippe

Sheikh Joaan Bin Hamad Al Thani, younger brother of the Emir of Qatar and one of the most recognisable figures in international equestrian and sporting circles, was recently spotted on the wrist with a piece that any informed collector would clock immediately: the Patek Philippe Aquanaut Travel Time Advanced Research in 18kt white gold, reference 5650G.

Introduced at Baselworld 2015, the 5650G was the fourth instalment in Patek Philippe's Advanced Research series — a line the manufacture uses to field-test proprietary innovations before potential integration into the broader catalogue. The 5650G's headline development was the Spiromax balance spring and, most significantly, a flex-spoke escape wheel crafted from Silinvar, Patek's trademarked silicon-composite material. The flex spokes deform fractionally under impulse, absorbing energy more efficiently and — critically — functioning without lubricant. That is not a minor footnote; oil degradation at the escapement is one of the primary drivers of long-term rate deviation in mechanical watches.

The movement, calibre 324 S C FUS, beats at 28,800 vph, offers a 45-hour power reserve, and drives the signature Aquanaut Travel Time complication: a second time zone displayed via a jumping hour hand, with a day/night indicator and a clever single-pusher mechanism that advances or retreats the second time zone in one-hour increments without disrupting the running seconds. The 44.6mm white gold case pairs with the Aquanaut's signature embossed rubber strap and composite dial in a dark grey tone. Production was capped at 500 numbered pieces worldwide.

In collector terms, the Advanced Research references occupy a distinct tier. They are not simply limited-edition commercial pieces — each documents a verifiable technical achievement, and the 5650G is among the most technically substantive of the series. Ownership signals engagement with the engineering narrative of the brand, not merely its prestige.

Sheikh Joaan is widely known in watch circles for wearing considered, technically significant pieces rather than defaulting to the obvious. His choice of the 5650G over more conventional Patek grands complications reinforces that reputation. On the secondary market, examples trade well above retail, reflecting both the hard 500-unit ceiling and the growing institutional respect for the Advanced Research programme.