Auction introduction: Sotheby’s proudly presents a stunning collection of rare pocket watches assembled over the course of 45 years, including a diverse array of pieces spanning from the 16th to the 20th centuries. Comprising almost 100 watches of supreme craftsmanship, originally made for different markets, from China to the Ottoman Empire, the collection is led by a rare Breguet watch thought to have been made for the Sultan of the Ottoman Empire.