Heraclius, with Heraclius Constantine and Heraclonas (610-641). AE Half Follis. Ravenna mint. Dated RY 28 (AD 637/8)?. D/ Heraclonas, wearing plain cap, and Heraclius and Heraclius Constantine, each wearing crown, standing facing, all wearing chlamys and holding globus cruciger in right hand; cross to upper left. R/ Large K; cross above, A/N/N/O XXV/III (?) across field, A below. D.O. -; Sear -; cf. Ranieri 647. g. 2.84 mm. 20.00 RRR. Very rare. Green patina. VF.