This coin is part of a very interesting series minted at Smyrna before the whole minting operation got moved to Cyzicus sometime in mid. 269AD.
CLAUDIUS II GOTHICUS AE22mm 3.39g Antoninian (VF+)
AV: IMP C M AVR CLAVDIVS AVG; • under the bust.
REV: FORTVNA AVG; Fortuna stg. l., holding patera over small altar in r. hand and cornucopiae in l. hand
EXE: SPQR
REF: RIC V-1 231var. (different bust type) RIC Online #829 very rare, only 1 other specimen recorded, diferent dies, first officina, Smyrna mint end 268 – early 269AD.