DISAPPEARING ACTS
MIRROR, MIRROR ON the wall, who’s the thinnest of them all? Since 2014, that’s the question the world’s two most storied jewelry houses, Bulgari and Piaget, have been trying to answer, locked in a battle to create the slimmest watches on the market. But it’s no vanity project: Manufacturing such ultra-thin timepieces requires an extraordinary level of technical prowess. This year, if you judge by sheer lack of size, Piaget won the round
