Vacheron Constantin, Ref.48200, 'Phidias' World Time Yellow Gold. More than 185mm around the wrist. Phidias was an ancient Greek sculptor, painter and architect, and is widely recognized as the greatest classical sculptor. In 1989, Vacheron Constantin released a series named after him to emphasize the overall design style of this metal one-piece chain. The 35mm Ref.48200 is a world time piece from the transition of the 1980s and 1990s. The dial is designed with longitude and latitude to echo the world city on the outer circle. Besides the gold hour markers and hands, there are two diamonds set at the 12 o 'clock and 6 o 'clock positions.