Britain, unlike Europe, does not have a tradition of publishing regional numismatic corpora to agreed national standards. So far, only the Roman coins from North-West England and Wales have been published in detail. Roger Penhallurick was the late Senior Curator of the Royal Institution of Cornwall. From a Cornish family, returned from Wales, Roger truly 'gathered up the fragments that are left, that nothing be lost', (motto of the Federation of Old Cornwall Societies). He worked on his coin corpus for many years and completed it in 2000 before his untimely death in 2004. The corpus is a true testament to his enthusiasm, commitment and awareness of the importance of coin finds to the archaeology and history of Cornwall. The work of reorganising the manuscript was undertaken by Dr. Nick Wells of Cardiff University. This task proved to be rather more complicated than initially envisaged though the Editors feel that the end result is worth the effort.