Greubel Forsey

Up Close with the Greubel Forsey Double Balancier Sapphire
Double balance, constant force, and all sapphire.
Innovating and Inventing: The Greubel Forsey Différentiel d’Égalité Explained
Constant force revisited.
A Chance to Own J.C. Biver’s Greubel Forsey and David Zanetta’s De Bethunes
At Phillips' Hong Kong watch auction.Load More