6. Breguet & Fils, No.2667 Precision Stop-Watch – $4.6 Million
Since the 18th century, the watches of Abraham-Louis Breguet have attracted crowds whenever they come up for auction. Breguet’s watchmaking skill was second to none and the quality of his products attracted the biggest names of his time. Notable customers and patrons of Breguet included Louis XVI, Napoleon Bonaparte, Tsar Alexander I, King George III, Arthur Wellesley and Queen Victoria. Helping Breguet to claim spot number six on this list is a two movement stop-watch. The 18 karat gold and platinum piece is, understandably, built to the highest standards. Sold in 1814 for a mere 5,000 francs (about $18,000 in today’s terms), this stopwatch commands a price of $4.6 million.