In a break with tradition, this Tourbillon movement with detent escapement does not have the classic "Three Bridges" composition. Only the bridge supporting the Tourbillon has the Brand's traditional arrow shape.
The arrow-shaped bridges are angled and guilloched. They support gold screw-mounted settings. The spherical hairspring alone is a technical feat. The cut bimetal balance compensates for changes in temperature.
Tourbillon pocket watch with Three Gold Bridges.
Circa 1889. La Esmeralda.
I take it this is from 1982, reading the inscription on the barrel.
Tourbillon with Three Gold Bridges.
In tribute to both its own heritage and a masterpiece of Swiss Haute Horlogerie, Girard-Perregaux presents a contemporary reissue of the Tourbillon with three gold Bridges pocket watch; the very same model awarded a gold medal at the Paris Universal Exhibition of 1889.
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