2700 BCE Early Dynastic. Abu Habba, Sippar Iraq. Aragonite cylinder seal; contest scene; in the centre - a bearded nude male with 6 roundels around his head termed a "crested head-dress", holds a bull in each hand.
Jasper cylinder seal, Sumeria 3000-4100 B.C., Louvre. Mesopotamian cylinder seals are small cylinders, generally made of stone and pierced through from end to end so that they could be worn on a string or pin. The surface of the cylinder was carved with a design, so that when rolled on clay the cylinder would leave a continuous impression of the design, reversed and in relief.