Coat of arms with griffin of the Martelli family; The coat of arms with the back part of a lion and a bird head with ears and bird claws is turned to the left and placed against a smooth; slightly concave background. He stands on the left hind leg and has pulled up the right one; hits with the bird's claws forward and has an open mouth; in which the tongue is visible. Tail and wings are pointed up.; Luca della Robbia (workshop of); Florence; c. 1470 - c. 1480; h 124.5 cm x w 79 cm; 48.5 kg