Severus Alexander Denarius. 232 AD. IMP ALEXANDER PIVS AVG, laureate draped bust right, seen from front / SPES PVBLICA, Spes walking left, holding flower & raising skirt. RSC 543, RIC 254, RSC 543.
http://www.wildwinds.com/coins/ric/severus_alexander/RIC_0254-RSC0543.jpg
Saludos! :cheers: