Gallienus, Samosata mint,
Antoninianus (20 mm / 4.01 g), 256-258 AD.,
Obv.: IMP C P LIC GALLIENVS P F AVG , radiate, draped and cuirassed bust of Gallienus right, seen from behind.
Rev.: PIETAS AVGG , Gallienus and Valerian standing facing one another and sacrificing over altar.
Göbl 1684m ; RIC 447 .
2-4 years later the bottom fell out from their world by the capture of Valerian I by Shapur I.
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