Watch List notes:

Gallienus. A.D. 253-268. BI antoninianus (21.82 mm, 3.80 g, 1 h). Rome mint, struck A.D. 267-8. GALLIENVS AVG, radiate head right / NEPTVNO CONS AVG, capricorn right, ς in exergue. RIC 245; RSC 670; SRC 10293. VF, much silvering adherant, obverse.