Severus Alexander (222-235).     AR Denarius.   Obv.    IMP C M AVR SEV ALEXAND AVG. Laureate, draped and cuirassed bust right.        Rev.   SALVS PVBLICA. Salus seated left, feeding snake twined round altar.     RIC IV  178; C. 530.     3.05 g.   19.00 mm.        Superb example, virtually as struck.    Good EF/About FDC.