Watch List notes:

Severina. Augusta, AD 270-275. Antoninianus (23mm, 4.72 g, 12h). Siscia mint, 4th officina. 9th emission of Aurelian, autumn AD 274-spring 275. Draped bust right, wearing stephane, set on crescent / Concordia standing left, holding a signum in each hand; –|Q//XXI. RIC V 13; BN 949. Toned silvering. Superb EF.