AU Aurelian Aureus or Binio 270-275 A.D.(6.0g)
O: IMP C L DOM AURELIANUS PF AUG; laur.dr.cuir. bust LEFT; authenticated by the coin department of the British Museum, though they do not have an Aurelian aureus facing LEFT; Very rare. See NFA Auction XXXI, lot 782 for another left facing bust; possibly from Siscia mint with obverse of RIC 179 and reverse of RIC 182.
R: VIRTUS AUG; Mars advancing r. holding spear and carrying trophy, captive at feet.
G: Mint State (virtually as struck)