Watch List notes:

Constantius I. AD 305-306. AR Argenteus (19mm, 3.47 g, 1h). Serdica mint, 4th officina. Struck AD 305-306. Laureate head right / VIRTVS MILITVM, three-turreted camp gate without doors; ·SM·SDΔ·. RIC VI 11a var. (unlisted officina); Gautier 25; RSC 304A corr. (rev. legend). EF, iridescent toning.