phaedrag2006
About Company
Montblanc Minerva makes its own balance springs for its 18,000 vph movements. These are individually brought to time by matching the oscillations of a spring fitted to a balance, fake Rolex Cosmograph Daytona watch with a reference balance, using a special tool. The effective length of the balance spring is manually adjusted until it matches the fake Cartier Tank Solo vibrations of the reference balance.
