Watch List notes:

The Roman Empire. Gallienus joint reign with Valerian I, 253 – 260 and sole reign, 260 – 268
Antoninianus 253-254, BI 21 mm, 2.72 g. IMP C P LIC GALLIENVS AVG Radiate, draped and cuirassed bust r. Rev. CONCORDIA AVGG Two clasped hands. C 125. RIC 131.
Iridescent tone and extremely fine