The general reliability of 14C dating in archaeology induced us to try to extend the method to other datable materials that may be uncovered, even those which have till now been neglected or considered unreliable. Improvements in AMS techniques will also help us date very small samples or those with low carbon content. For these reasons we have undertaken a systematic study of the application of 14C dating to potsherds which are usually abundant in prehistoric sites and often more representative of human activity than other materials such as charcoal (Evin, 1983).