.jpg?maxwidth=3840)
Lot 144
BLANC PERE & FILS. A GOLD OPENFACE POCKET WATCH WITH SECONDS BEATING POUZZAIT LEVER ESCAPEMENT
SIGNED BLANC PERS & FILS, PARIS, CIRCA 1790
Closed15 June 2011
Price Realised
USD 5,250
More Information
Specialist note
Jean Moise Pouzzait invented the lever escapement that bears his name in 1788. He was head of the first school of horology in Geneva. The extra large balance swings one second each way and the escape wheel usually carries a sweep center seconds hand. The slow action of the balance and excessive friction of the escapement caused it to be superceded by the lever escapement.