Clockmaker: Ferdinand Berthoud, Longcase astronomical regulator, French, Paris
Patek Philippe - The Hong Kong Wa Lot 1089 November 2021
A fine French Empire ormolu mounted mahogany table regulator by Folin, circa 1800. - Gude & Meis
Unknown, A Directoire table regulator with Gregorian and full Revolutionary Calendars, Paris, date circa 1800
Louis Philippe Secretary - French Metro Antiques
Patek Philippe - The Hong Kong Wa Lot 1071 November 2021
The Project Gutenberg eBook of Time Telling Through the Ages, by Harry C. Brearley.
The history of Breguet, Time and Watches
Only Watch 2015: Full List With Photos Of The Unique Piece Watches At Auction - Quill & Pad