Alexandria Troas, 218-222 AD., Elagabalus, As, Bellinger A315.

Alexandria in Troas, Elagabalus,
As / Æ24 (23-24 mm / 8.55 g), 218-222 AD.,
Obv.: ANTONIN - VS PIVS AV , laureate, draped bust of Elagabalus right, seen from behind.
Rev.: COL ALEX / AVK , horse feeding right.
Bellinger, Troy, 124, A315 ; von Aulock 1471 ; SNG Cop. 153 .

Lars R.:
"As we know from many other provincial coins, differentiating between Elagabal and Caracalla (when he was young) can be very difficult, but in the case of Alexandria Troas, we do have one advantage: during Caracalla's visit in 214 AD, the city changed the legends on its coins from COL AVG TROAD (or similar) to COL ALEX AVG (or similar). All coins with young portrait and reverse legend COL ALEX AVG thus can be assinged to Elagabalus, as coins from Caracalla that were struck after 214 AD do have a mature and bearded portrait. Bellinger noticed this when he worked on his Troy book and thus corrected the error he made in his article in the ANS MS, when he had three Caracalla coins attributed to Elagabal in error."