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Galba AR denarius, Tarracco. April AD 68. 

GALBA IMP (clockwise from left), laureate head left,     globe at point of bust. 
LIBERTAS PVBLICA, Libertas draped, standing left, holding pileus and sceptre. 

RIC 22a (listed in Sutherland's Galba RIC Supplement in Numismatica E Antichita Classiche XIII)