Marie Antoinette's gold Breguet pocket watch, ca. 1827. It took 44 years to complete after it was first commissioned in 1793. Marie Antoinette never saw the watch through to its completion, as she was sent to the guillotine 10 years before its completion. It is referred to as the Queen/Mona Lisa of watches.
Mechanical Clock 6 — Steampunk by Eric Freitas Steampunk (13 October 2009 - 21 February 2010). The first museum exhibition of Steampunk art. An international show curated by American artist and designer Art Donovan. At the Museum of the History of Science, Oxford, England.