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Manual Mechanical Calibre type 77


  • +Manufactured Mechanical skeleton movement

  • +Manual winding

  • +Diameter 35.50 mm

  • +Number of jewels : 17

  • +Frequency: 3Hz, 21,600 alternations / hour

  • +Balance Angle 44°

  • +Spring barrel length 540mm (Ø14,65mm)

  • +Yoke system with coupling wheel

  • +Manufactured "slim" bridge anchor

  • +Manufactured Pawl winding

  • +Spiral spring type: Spiral of Archimedes

  • +Inertial Balance wheel: diamond-hardened and gold-plated

  • +Fully skeletonized Main bridge on dial, decorated with blasted ruthenium coating

  • +Manufactured barrel bridge, gear train bridge, and gear cock, decorated with blasting with a ruthenium coating

  • +Power reserve 50 hours

Calibre mecanique manuel type 77