Browsing Byzantine Empire Coinage of Heraclonas
According to Sear, there were probably no coins struck for Heraclonas (Heraclius Constantine) who believes that the coins attributed to him in D.O. (vol. II, pp 389-401) belonged to Constans II. The following coin is, however, not in Sear.
DOC II 9d
Heraclonas, AE follis, 641 AD. Syracuse, Sicily. 4.8 gr. 22.9 mm. INPERI CONST, crowned bust facing, wearing chlamys, cross on crown, holding cross on globe / Large m (lower case), ANA and cross to left, NEOS to right, mintmark large SCI. DOC II 9d; Schindler 1960; Wroth 345.