Diocletian, AE quinarius, 16mm, 1.70g. 286-287 AD. 

IMP DIOCLETIANVS AVG, laureate, draped bust right.
IOVI CONSERVAT AVGG, Jupiter standing right, head left, 
holding thunderbolt and sceptre, eagle at foot left.

RIC V Rome 193; Cohen 243. 

Rare.

Contributed by Dr. Hubert Lanz, auction November 2000, 
Added July 2011.