Diocletian. AD 284-305. AR Argenteus (17.5mm, 2.90 g, 12h). Nicomedia mint, 3rd officina. 4th emission, AD 298-299. Laureate head right / Four-turreted city gate, open doors; star on lintel; –|–//SMNΓ. RIC 25a; Gautier, Argent 17; RSC 492b. Porosity. VF.