Diocletian. AD 284-305. AR Argenteus (20mm, 3.67 g, 6h). Rome mint. Struck circa AD 294. Laureate head right / Tetrarchs sacrificing over tripod before city enclosure with six turrets. RIC VI 19a; Jeločnik 41d; RSC 488e. Fine, scrape on the reverse.
From the J. Eric Engstrom Collection.