Watch List notes:

Diocletian, 284-305 Denarius Rome circa 285, Æ 18.5mm., 3.15g. Laureate and draped bust r. Rev. Jupiter standing l., holding sceptre and thunderbolt. C 227 (quinarius). RIC 187 (quinarius).

Apparently unrecorded. A very interesting issue, dark green patina, Good Very Fine.