Originally released for the very first time on the occasion of the Patek Philippe “The Art of Watches Grand Exhibition New York 2017” with two 5-piece limited edition watches for the U.S., the Patek Philippe World Time Minute Repeater ref. 5531 made its very first appearance. Now, at Baselworld 2018, the micro-mechanical masterpiece has been added to the manufacture’s regular collection. It is a new grand complication with features in a domain that Patek Philippe has dominated for decades: a minute repeater, a World Time mechanism, an enamel arts dial, and a rose-gold case crafted in-house.