Berkeley King 43 is a truly unique tourbillon watch for him. Apart from the obvious: diamond and sapphire set case and dial, the wristwatch also features London skyline engraved at the back of the case and diamond-set buckle.

Forbes 2018 - Backes & Strauss and Franck Muller partner up to create the third in a series of Bespoke tourbillons watches, priced at $500,000 fit for royalty.