The fusion of a century old complication and the latest collection to be unveiled this year has made uncovering the Clé de Cartier L’Heure Mystérieuse a moving visual experience. Like watching the perfect magic trick, it’s spellbinding. But there’s no need for illusion here, just expertly mastered mechanical knowledge. The curve is tight, the angles have disappeared, the bezel is round and the lugs are smooth. The slightly elongated case (41mm) presents harmonious features. Two spear-shape hands on the openwork dial spin in the heart of off-centre sapphire discs brought to life by the famous manual wind 9981MC movement and the mysterious hour and minute display (48-hour power reserve). The assorted Roman numerals and minute track reflect the brand’s signature features. Operating the crown harks back to a time when winding a watch was a ceremony in itself. Whether it be in palladium or rose gold, this timepiece is a feat of design. Price: 60,000 CHF (gold) – 64,500 CHF (palladium). Dan Diaconu