By Nancy Olson Chopard is debuting its first jumping-hour watch, the L.U.C Quattro Spirit 25, in honor of the 25th anniversary of its Fleurier Manufacture. This Poinçon de Genève-certified timepiece is a stunning example of Chopard’s genius in melding understated design and technical boldness—a pairing particularly evident within the L.U.C collection. There are just 100…