Mega brands like Audemars Piguet and Patek Philippe come together with independents including Cyrus, Urwerk and MB&F to produce one-of-a-kind timepieces that will be sold at auction by Christie’s at the iconic Four Seasons Hôtel des Bergues.
German watchmaker says the bidirectional automatic hammer winding mechanism transfers even the slightest arm movements to wind the mainspring.
