Watch List notes:

Severina. Augusta, AD 270-275. Antoninianus (22.5mm, 3.42 g, 12h). Rome mint, 2nd officina. 11th emission, early-September AD 275. Draped bust right, wearing stephane, set on crescent / Concordia standing left, holding signum in each hand; –|B//XXIR. RIC V Online 1816; RIC V 4; BN 221--3. Dark brown patina. Good VF.