Alexandria, Troas. AE20, semi-autonomous. 138-268. 5.65 g. ALEX TRO, Turreted and draped bust of Tyche right; CO AV on vexillum to left. COL AVG TRO, horse grazing right. Obv. legend var of SNG von Aulock 7551; Mionnet Supp V, 103 (both with ALEXA) With permission of cngcoins.com, Jan. 2009.