Vacheron Constantin’s reference 4737 is a wonderful example of the artistically flamboyant design language expressed by the brand during the mid-20th century. Focusing on clean lines and biomorphic shapes, the brand created a new aesthetic with this large, organic, square- shaped wristwatch with rounded stepped lugs and bezel, along with the slightly curved case. Introduced in the 1950s, the watch became known by Italian collectors as the “Cioccolatone” for the square-shaped chocolates they enjoy, and has over the last 70 years become an iconic Vacheron Constantin. Its avant-garde, industrial design exemplifies the beauty and artistic creativity the brand is known for. Manufactured with both manual and automatic movements, the collection featured timepieces with either subsidiary seconds or center seconds, as well as with and without date apertures, along with very rare triple calendar examples with moon phase.