Greubel Forsey Double Balancier Sapphire | aBlogtoWatch

Greubel Forsey launches the Double Balancier Sapphire exclusively for the North American market Retailing for $695,000, this timepiece was inspired by the phenomena of transparency and light Steven Rostovsky, North American distributor for Greubel Forsey, worked in conjunction with the factory on the design of this exclusive 11-piece edition. Source