Silver denarius, 19mm, 3.59gm, issued AD 222-228 Rome mint.
Obv: IMP C M AVR SEV ALEXAND AVG, Laureate, draped bust right.
Rev: SALVS PVBLICA, Salus seated left, feeding snake twined round altar out of patera.
References: Sear 7925, RIC 178, RSC 532.
