6Breguet & Fils, No.2667 Precision Stop-Watch – $4.6 million
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Breguet’s watchmaking skills were incomparable and the quality of his products, and attracted the greatest names of his time. Gold and 18 carat platinum of the piece justify its price. It was sold in 1814 for about $18,000 for today’s data and now costs $ 4.6 million.