Watch List notes:

Gallienus. A.D. 253-268. AE antoninianus (20.97 mm, 3.10 g, 6 h). Rome mint, struck A.D. 267/8. GALLIE[NVS AV]G, radiate head of Gallienus right / NEPTVNO CONS [AVG] // N, hippocamp right. RIC 245; RSC 667. Near VF, dark olive-green patina, some areas of roughness.