François Chaille is passionate about art history, fashion, jewelry, and horology. He has published over a dozen works with Flammarion, including Cartier: Creative Writing, the three volumes of The Cartier Collection (Jewelry, Timepieces, and Precious Objects), Audemars Piguet: Master Watchmaker Since 1875, and Girard-Perregaux. A historian and expert on fine watchmaking, Dominique Fléchon is the author of many specialist works, including The Secrets of Vacheron Constantin and The Mastery of Time, both published by Flammarion. Franco Cologni is the author of numerous books, including The Cartier Tank Watch (Flammarion, 2017).