Marcus Aurelius (as Caesar) AE16 of Nicaea, Bithynia. AD 196-198. 3.16 g. ANTWNINOC KAIC, youthful, bare head right. NIKAIEWN, coiled serpent with head right. RecGen 128; McClean 7482. With permission of cngcoins.com, the AK collection sale, lot L68 corr.("Caracalla").