The Grand Complication (2001)

Allen Kurzweil's literary mystery about Alexander Short, a librarian drawn into the search for a missing object from an eighteenth-century cabinet of curiosities. (Goodreads)

Watches

Breguet No. 160 Marie-Antoinette: The plot turns on the lost Marie-Antoinette watch, Breguet's legendary No. 160 grand complication.

Source text: Exact wording has not yet been verified from an accessible copy; an edition-level passage is still needed.