Diocletian (284-305). AR Argenteus, Treveri mint. D/ DIOCLETIANVS AVG. Laureate head right. R/ VICTORIA SARMAT. Four tetrarchs sacrificing over tripod before city enclosure with six turrets; below, C. RIC 104 a (R5). AR. g. 3.01 mm. 19.50 RRR. Extremely rare. Brilliant and lightly toned. Good VF.