It is through the discovery of numerous fragments of jars, bowls and dishes at several sites from the west coast to the east coast (region of Dukhan and Ras Abruq, Al-Khor) that the Mesopotamian trade of Ubaid culture is recognized in Qatar.
These two upper parts of a ceramic jar are covered with a geometric brush pattern and black/brown paint characteristic of ceramics produced in the archaeological site of Tell Ubaid - Mesopotamia (city-state 6500-3800 B.C.).
The presence of this perforated inner rim makes it possible to place a lid and to hang: these are jars for transport, storage and conservation. These objects come from the excavations at al-Khor in 1977 and date from the C14 for the more restricted period from 4800-3750 B.C.E.