Geographic Location Manufacture Date B.C.
Egypt (CH) 7000
Anatolia (headwaters of the Tigris) (CH) 6500
Iraq (North West) (CH) 6000
Mesopotamia (North) (CH) 5000
Euphrates Valley (C) 4300
Europe (East Balkans) & Danube Valley (CH) (C) 4300
Lake Superior (Keweenaw. Isle Royal)* (CH) 4000
Phoenicia and Palestine (C) 3500
Indian Sub-continent (C) 3500
Sumer (C) 3100
Europe (Iberia) (C) 2400
CH = Cold hammered C = Cast in a mold
GRAHAM CLARKÕS WORLD PREHISTORY (1991)