Product Description Konstantin Chaykin is an independent Watches from Russia and a member of the world-renowned Académie Horlogère des Créateurs des Watches(AHCI). This "Time Eater Tourbillon" is a model created through a collaboration between Louis Erard and Konstantin Chaykin. This tourbillon model combines Konstantin Chaykin's distinctive design with Louis Erard's signature regulator mechanism. This is a limited edition model with only 78 pieces produced worldwide. Parallel import product with the sales date not filled in on the warranty card. Since it is Unworn, only the Movement has been checked.