Æ15 - Caracalla COL AVG TRO

Alexandria Troas, a Roman colony established by Antigonus and later refounded by Lysimachus before Augustus formalized its colonial status, retained the right to issue autonomous bronze coinage well into the Severan period. At 1.94g and 15mm, this is among the smallest denominations the city produced — likely a fractional issue filling gaps in small-change supply for a port city whose economy ran on harbor traffic and transit trade along the Troad coast.