This agate Mesopotamian signature seal of two lions attacking a deer was created about 600 B.C.E. It has a hole drilled through its length so that it could be worn on a string or pin. These types of seals are often engraved with a design so that when they were rolled out on clay they would leave a back-to-front impression of the design in relief. They were used as an administrative tool, a form of signature, as well as jewelry and as magical amulets.