http://agathe.gr/democracy/political_organization_of_attica.html
Political Organization of Attica: Demes and Tribal Representation Each tribe was divided into three parts, and each third (trittys) was from one of the three regions of Attica, plain, coast, or hills ... The tokens were cut before firing in the kiln and would have been reunited in the process of allotting the deme office.
