Very rare antoninianus of Tacitus one of the shorter reigning Emperors.
Variety unlisted in printed RIC.
Roman Imperial
Tacticus (235-238), Antoninianus 276, Serdica mint
Obverse: radiate, draped and cuirassed bust right
CL TACITVS AVG
Reverse: Mars standing right, holding spear and presenting globe to Tacitus standing left, holding scepter, S in exerque
CONSERVAT MILIT
Weight 3.6 g