Severus Alexander AR Denarius, 2.52 gr, 18.12 mm. Antioch mint, 222-235 AD.

Obv: IMP SEV ALEXAND AVG, laureate, draped and cuirassed bust right.
Rev: SALVS PSVLAS (sic), Salus seated left, feeding serpent 
rising from altar; star in right field.

Reka-Devnia hoard p. 134; RIC 298 var (reverse legend); Sear 
-;. 
This unusual reverse legend is known only from an example in 
the Reka Devnia hoard (page 134) and is mentioned in a note 
on page 93 of RIC. 

Courtesy of TimeLine Originals (www.time-lines.co.uk), Dec, 2010