23rd-22nd century BC.A carved black jasper cylinder seal with seated figures; accompanied by a museum-quality impression, and a hand written and signed scholarly note issued by W.G. Lambert, Professor of Assyriology at the University of Birmingham 1970-1993, which states: 'Cylinder of black/green stone, 29 x 17 mm. Seated god, two facing gods, altar between, crescent in sky. Akkadian, c. 2300-2200 B.C. Worn. W.G. Lambert.' 15.22 grams, 29mm (1 1/4"). Property of a London gentleman; previously in the late Hassan Reyhani collection before 2000; acquired on the UK art market in the 1980s-early 1990s; thence by descent. Fine condition.