The wrought iron part, almost entirely intact (the original pommels are missing), dates to the 16th century. The carved wooden turtle, with small turtles on its front two legs and twining ivy on the front of its back shell, dates to the second half of the 17th century. The item was loaned to an exhibit in Rome on alchemy in 2006. Probably purchased by the brothers Fausto and Giuseppe at the end of the 19th century, the balance is still displayed--as are all other objects in the museum--in its original place, thus contributing to the authentic "time capsule" ambiance.