Watch List notes:

Severina. Augusta, AD 270-275. Antoninianus (23mm, 3.63 g, 6h). Siscia mint, 1st officina. 9th emission, AD 274-275. Draped bust right, wearing stephane, set on crescent / Concordia standing left, holding signum in each hand; P//XXI. RIC V 13; BN 941 var. (legend breaks). Near EF, toned, considerable silvering remaining.