Alexandreia Troas. semi-autonomous issues. AD 138-268. AE21, 5.33 g. CO TROAD, Turreted and draped bust of Tyche right, CO AV on vexillum behind. COL AVGO TROA, eagle standing front, head left, wings spread, on forepart of bull right. Bellinger A491 var (legends). CNG 314, lot 251. With permission of cngcoins.com - Electronic Auction 314, Lot 251, Nov. 2013