Ancient City Seals
At the end of the Uruk period in the ancient Near East c. 3100 BC there was a widespread re-alignment and reformulation of power structure in the ancient Near East entering the following Jemdet Nasr period, also called the Uruk III period. Based on recovered "city seals", primarily from Jemdat Nasr, it is thought that a consortium of twenty cities engaged in a trading system built around the primary Uruk female deity. In the Early Dynastic I period another political re-alignment occurred, though restricted primarily to Mesopotamia. A standard list of cities found on clay sealings led to the proposal that there was a Early Dynastic I period "Kengir League" of cities centered around Nippur which encompassed a joint trading system with an underlying religious basis, similar in nature to the later bala taxation system. Uruk has also been proposed as the central city. While the concept has received support there is debate about how closely and in what way the cities were bound. It has been proposed that the seals were part of a progression, a cultic journey, of the main female deity's cult statue from Uruk through the other cities of Southern Mesopotamia.
Uruk III period
Sealings with "city seals" from the Uruk III period, were found at Jemdet Nasr. Subsequently another, illicitly excavated, tablet was identified as coming from Tell Uqair bearing the same seal at those from Jemdet Nasr. A single sealing, used to seal a door, was also found at Uruk. Altogether there are seventeen sealed tablets from Jemdet Nasr and one from Tell Uqair. Thirteen of the Jemdet Nasr tablets were analyzed with portable X-ray fluorescence and should to be from a single archive. All contain similar quantities of "figs, apples,wine, and a certain fish product". The seal in question is in two registers and thought to have originally had twenty signs. Of these the only certain identification is for, all on the top register, Ur, Larsa, Zabalam, Urum, and BU.BU.NA2. An alternative reading of the known cities is Ur, Larsa, Nippur, Uruk, Keš, Zabala, and, Ku’ara. It has been proposed that these seals were an earlier version centered around Uruk,, of the Early Dynastic I "Kengir League" city seals. It has been proposed that the system represented by these seals supported the cult of a Uruk III female deity, possible Inanna, similarly to the role of Enlil in the later Kengir League.On texts from the Uruk III / Jemdet Nasr period there are lexical lists which list cities in a standard order. These cities include Ur, Nippur, Larsa, and Uruk.