Constans II, with Constantine IV. 641-668. Æ Half Follis (23mm, 3.29 g, 6h). Syracuse mint. Dated IY 4 (AD 660/1). Crowned facing half-length busts of Constans II, holding globus cruciger, and Constantine IV / Large K; +/A/N N/OΔ across field. DOC 184; MIB 21; Anastasi 212; SB 1114. VF, dark green patina. Rare. Overstruck on an earlier Syracuse mint follis of Constans II, with Constantine IV (SB 1109).