4th-3rd millennium BC. A black jasper cylinder seal of Jemdet Nasr type with two registers separated by parallel lines, hatched saltires in one and crossed bulls in profile in the other; accompanied by a museum-quality impression. 3.24 grams, 26mm (1"). The Signo collection, the property of a West London businessman, formed in the late 1980s-early 1990s; item number 4072; academically researched and catalogued by the late Professor Lambert in the early 1990s.