F.P. JOURNE, TOURBILLON SOUVERAIN, A FINE PLATINUM MANUAL-WINDING WRISTWATCH

The Tourbillon Souverain launched F. P. Journe’s illustrious career in 1999. It was the first wristwatch to combine a remontoire d’égalité (a constant force device that ensures a consistent supply of power from the mainspring to the escapement) with a tourbillon and established F. P. Journe's status as a technical and design genius. Journe debuted the Tourbillon Nouveau (reference “TN”) in 2003 and this remained in production up until 2018. The reference TN was replaced by the introduction of the Vertical Tourbillon in 2019.