Diocletian, AE radiate fraction. Rome. 22.2 mm, 3.82 g.  

IMP CC VAL DIOCLETIANVS PF AVG, radiate, draped and cuirassed bust right, seen from the back.
VOT XX Delta in three lines within wreath.

RIC VI Rome 77a.

With permission of Naville Numismatics auction 49, Lot 588, May 2019.