Breguet caliber 558QP2
Manually wound movement with tourbillon and perpetual calendar. Numbered and signed Breguet. Cal. 558QP2. 14 ½ lines, 21 jewels. Power reserve of 50 hours. Small seconds on the tourbillon axis. Lateral lever escapement and balance with adjustment screws on a Breguet spring. Frequency 2,5Hz. Adjusted in six positions.