One of the world’s finest watches, the gold cased Breguet No. 1297, a four-minute tourbillon with a Robin escapement made for the King of England, George III. Fitted with a thermometer, and stop slide for timing the seconds for use in his private observatory at Kew, 1808.
For further information please click on the links below:
https://www.artscouncil.org.uk/sites/default/files/download-file/Breguet_expert%27s%20statement.pdf