Diocletian, Antoninianus, Ticinum, 20mm

(IMP C C VAL) DIOCLETIANVS PF AVG, radiate, draped and 
cuirassed bust right. 
CONSERVAT AVG, Sol walking left, raising hand and holding 
whip.
Mintmark SXXIT

RIC V-II, 206.

Courtesy of Zeus Coins, May 2010.