Bottom line: Commissioned in 1783, this stunning timepiece took about 40 years to create. While it was intended for Marie Antoinette, she was executed decades before it was completed.
When it was finished in 1827, the Breguet company held onto it for years until it was sold to Sir Spencer Brunton, a flour miller and racehorse owner, in 1887. By the 1920s, it was in the collection of British engineer and industrialist Sir David Lionel Goldsmid-Stern-Salomons.
Sometime after that, it landed in the L.A. Mayer Institute for Islamic Art Museum in Jerusalem but was stolen in April 1983 with 100 other valuable timepieces. It was lost until 2004 when the wife of the person who stole it attempted to sell it. It was recovered in 2007 and returned to the museum.
The 18-karat gold watch with sapphires has a full perpetual calendar, a jumping hour hand and is made of more than 800 parts.