Vacheron Constantin 453/3b-721, Balance, complete

• Vacheron Constantin original balance in very good used condition.

• Fits 453/3b
  

Versions:

• 453: sub second.
• 454: center seond.
• 485: sub second, calendar: day, date, month.
• 495: sub second, calendar: day, date, month, moon phase.
• 1007: sub second, stop device.
• 1008: center second, stop device.