The King of Spain is a passionate sailor, and that’s probably why he favours the Audemars Piguet Royal Oak City of Sails Alinghi Edition. Created in 2003 to mark both the 30th anniversary of the Royal Oak and the America’s Cup victory of Team Alinghi, the watch features a stainless steel case, grey dial, and bold black numerals, and, more significantly, it incorporates sailing-inspired details. The limited-edition nature of the City of Sails makes it particularly exclusive, and the Royal’s selection of it is a nod to his long-standing connection with competitive sailing.
7. King Mswati III’s Jacob and Co ‘The Grand Baguette Diamond’
The King of Eswatini likes to sport statement pieces that will turn heads. And Jacob and Co’s ‘The Grand Baguette Diamond’ does precisely that. Sized at a staggering 47mm and designed in a unique pentagonal shape, the watch is set with 761 diamonds across its case and dial. It also has five separate dials that are capable of tracking multiple time zones simultaneously. Retailing for around $1 million, this particular model is also a favourite of Cristiano Ronaldo.