Diocletian. AE follis. Siscia mint, struck AD 299. 28 mm, 9.85 g.

IMP DIOCLETIANVS P F AVG, laureate head right.
GENIO POPVLI ROMANI, Genius, modius on head, naked but for chlamys draped over chest and left shoulder, standing left, holding patera and cornucopiae. 

Gamma in right field. Mintmark SIS. 

RIC VI Siscia 108a; Sear 12780.

With permission of Roma Numismatics Ltd - E-Sale 73, Lot 942, July 2020