You could release it with a limited edition gift box; pull in a new brand ambassador; or you could do what luxury watchmaker Breguet has done with its Classique Tourbillon 5377, and remake it in platinum.

It's not like the watch wasn't impressive already. It's impossibly thin for such a complicated watch, with a 7mm-thick case housing an off-centre movement that measures just 3mm – the thinnest self-winding tourbillon in the world. That's not to mention a power reserve of 80 hours – an eyebrow-raising figure for a watch of this complexity – and a lateral lever escapement in silicon and anti-magnetic steel. It's lovely in rose gold, but in the rarest precious metal in the world, it's priceless. Well, not quite – it's yours for £117,100.

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