Trebonianus Gallus, AE21 of Alexandreia, Troas. AD 251-253. 5.11 gr. IMP C VIBI TRIBO GALLVS AVG, laureate, draped and cuirassed bust right. ALEXAND AVG TROADA beneath the nine members of the Alexandreia city council sitting in a semicircle, the outer two on curule chairs; city wall inscribed with the city name in two lines. Bellinger A409; BMC 145; Rhousopoulos 3406. Extremely rare. With permission of Hauck & Aufhäuser, Auction 21, lot 449, March 2009.