Lot 2807. nVF. Est $195. Caracalla AE31 of Serdica, Thrace. obv: AVT K M AVP CEP ANTWNINOC, laureate, draped & cuirassed bust right rev: OVLPIAC CERDIKHC, Hygeia standing right feeding serpent from a patera. By permission of ancientcoinart.com, December, 2002.