Diocletian (284-305). AE Follis, Ticinum mint. D/ IMP C DIOCLETIANVS PF AVG. Laureate head right. R/ GENIO POPULI ROMANI. Genius standard left, holding patera; star in left field; ST in exergue. RIC 31 a. AE. g. 10.91 mm. 27.50 An outstanding example, from an exceptionally detailed reverse die. Superb brown patina, silvered on reverse. EF/Good EF.