LeCoultre and Vacheron Constantin Wristwatch 1950s with Diamond Mystery 'Galaxy' Dial in 14ct GoldThis Watch This highly collectable watch is the result of the only collaboration that ever took place between Vacheron and LeCoultre, despite the long history between the two companies. The watch is triple signed; on the case it is signed by both companies with "Vacheron & Constantin LeCoultre Watches Inc.", the movement is signed "Le Coultre Co." and the dial, "LeCoultre." The black, enamel dial is set with thirty seven genuine diamonds, all in white