Severus Alexander AE dupondius. Rome, 7.39 g. AD 222-231. 

IMP CAES M AVR SEV ALEXANDER AVG, radiate, draped and 
cuirassed bust right, seen from the back. 
SALVS PVBLICA, SC in exergue, Salus seated left by altar, 
holding patera, feeding serpent rising from the altar, 
resting left elbow on the arm of the chair. 

RIC 609; Sear 8054; Cohen 534. 

With permission of Emporium Hamburg, Auction 70, Lot 269, Nov. 2013.
Estimate: 75 Euro