Elagabalus, 218-222. Denarius (Silver, 19 mm, 2.92 g, 12 h), Rome, 221-222. IMP ANTONINVS PIVS AVG Laureate and draped bust of Elagabalus to right, horn over forehead. Rev. SVMMVS SACERDOS AVG Emperor, in Syrian priestly dress, sacrificing from patera held in right hand over tripod altar to left, and holding branch in left; in left field, star. BMC 232. Cohen 276. RIC 146. Toned. Flan crack, otherwise, good very fine.
From a Belgian collection, ex Classical Numismatic Group E279, 16 May 2012, 544.
It remains uncertain what the 'horn' above the emperor's head symbolizes exactly. It is certainly related to his duties as a priest of the Syrian sun-god, from which Marcus Aurelius Antoninus takes his more common name - Elagabal.