Watch List notes:

Diocletian (284-305). BI Antoninianus, Siscia mint, 292 AD. D/ IMP C C VAL DIOCLETIANVS AVG. Radiate, draped and cuirassed bust right. R/ VICTORIA AVGG. Emperors standing face to face, holding globe surmounted by Victory; in field, A; in exergue, XXI. RIC 279 var. (XXI in ex.). BI. g. 3.43 mm. 22.00 Brown toning, silvered. EF.