With the recently launched Masks and Sputnik watches Vacheron Constantin has created a new type of 3D vision into the watches works through the dial (or lack thereof). The saphire crystal being treated with a metalic substance it creates a visually enchanting display of gears, screws, plates etc.. which change colors and brilliance depending on the angle looked at:
Métiers d'Art: Les Masques (Indonesia)
Metiers d'Art: Sputnik
But back in 2002 Vacheron Constantin had created a superb openwork timepiece with the limited edition Retro 247 where the top plate served as dial:
Most impressive however is this perpetual calendar minute repeater pocket watch from 1906 with an opendial. This is definately thinking out of the box and extremely avant garde for the time to use the top plate and works as a design element for a watch and over 100 years later this pocket watch has definately a contemporary appeal.