Watch List notes:

Didius Julianus, 193. 'Denarius' (Billon, 20 mm, 2.28 g, 12 h), a contemporary 'limes denarius', irregular mint. [IMP] CAES M DID IVLIAN AVG Laureate head of Didius Julianus to right. Rev. RECTOR ORBIS Didius Julianus, togate, standing front, head to left, holding globe in his right hand and volumen with his left. Cf. BMC 7, Cohen 15 and RIC 3 (for prototype). Darkly toned. Fine.