Watch List notes:

Valerian I, 253-260. Antoninianus (Billon, 19 mm, 3.53 g, 5 h), Rome, 257. IMP C P LIC VALERIANVS P F AVG Radiate, draped and cuirassed bust of Valerian I to right, seen from behind. Rev. RELIGIO AVGG / Q Diana standing facing, head to left, drawing arrow from quiver with her right hand and holding bow in her left. Cohen 177. MIR 172c. RIC 115. Very rare, Göbl knew a single example. The reverse struck from a somewhat worn die, otherwise, good very fine.