Tacitus (275-276). BI Antoninianus, Serdica mint, 275-276. Obv. IMP C M CL TACITVS AVG. Radiate bust left, wearing aegis (?). Rev. CONSERVAT MILIT. Tacitus, standing right, holding sceptre and receiving globe from Jupiter, standing left, holding sceptre; A in field; KA in exergue. RIC V 193 var. (bust); C. 25 var. (bust). BI. 3.77 g. 22.6 mm. RR. Very rare variety, apparently unlisted in the standard bibliography. Dark patina. About EF.