Greubel Forsey’s new timepiece straddles the line between transparent and conventional face design

by Caleigh Ostrom

Established in 2004 by Robert Greubel and Stephen Forsey, the Greubel Forsey brand has made its brand-bones in part by taking on extreme technical challenges and creating outrageous and complex solutions. Over the last 12 years and counting, the company has collaborated and partnered with various houses. Most recently it did so with Cellini Jewelers to create a one-of-a-kind version of the Double Balancier à Différentiel Constant, only available at the Cellini boutique in the Waldorf Astoria hotel in Manhattan. This timepiece has a 43mm, 18-karat white gold case and a rich blue dial with a gauge to measure its 72-hour power reserve. Created exclusively by Greubel Forsey, the dial’s aperture provides a spectacular view of the three-dimensional hand-wound movement, revealing the heart of the mechanism. Two inclined balanced wheels coupled by a spherical and constant force differential allow for the watch’s steady positioning and timekeeping rate. An alligator leather strap wraps around the wrist.