Galerius AE Follis . Thessalonica. AD 293-311 Large Follis 

Obv: GAL MAXIMIANVS P F AVG, Laureate head right. 
Rev: VIRTVTI EXERCITI - Virtus walking right, holding trophy and spear 
Star in left field, Gamma in right field.

Mintmark dot SM dot TS dot gamma.

RIC VI Thessalonica 37a.

With permission of Auktionshaus H. D. Rauch GmbH, Sept. 2007.