Diocletian, Follis, London, c. 296-7, laureate and cuirassed bust right, rev. Genius standing left, holding patera and cornucopiæ, LON in exergue, 9.60g (CT 1.01.001; RIC 1a). Rare. The first London issue following the reconquest of Britain by Constantius I, and the first use of the LON mint-mark. Images courtesy of DNW.