Septimius Severus, As, Rome, AD 196. 24 mm; 9.47 g. 

L SEPT SEV PERT AVG IMP VIII, laureate head right, slight
 drapery on left shoulder. 
VOTA PVBLICA S-C, emperor, veiled, togate, standing front 
by altar, looking left, holding patera and scroll.

RIC 736; BMCRE 607++; Cohen 778.
Rare.

From the AK collection.