Watch List notes:

Diocletian. AD 284-305. AR Argenteus (20mm, 3.45 g, 12h). Thessalonica mint, 1st officina. Struck circa AD 302. Laureate head right / VIRTV-S MI-LITVM, four-turreted camp gate with doors; TS•A•. RIC VI 11a (unlisted officina); RSC 521b. EF, bright surfaces, light mark on obverse, hairline die break on reverse.