Nice specimen with very interesting legend SVMMVS SACERDOS AVG on the reverse.
Roman Imperial
Elagabalus (218–222), Denarius 221-222, Rome mint
Obverse: bust of the emperor in a laurel wreath facing right
IMP ANTONINVS PIVS AVG
Reverse: Emperor standing left, holding twig and offering from patera above the three legged altar, star in the left field
SVMMVS SACERDOS AVG
Weight 3.0 g