Summary
This paper addresses the issue of how coins are dated, and how coins are then used to provide dates on archaeological excavations. Using examples from Roman archaeology, the author examines how patterns of manufacture, supply, loss and retrieval can impact on the value of those dates. The need to examine coin finds within their stratigraphic context is emphasized, as well as the need for the archaeological numismatist and the excavator to collaborate closely to obtain the best from the data. The paper concludes with an analysis of the impact of sample size on dating.