BYZANTINE EMPIRE. Constantine V, with Leo IV and Leo III. 741-775. Æ follis. 3.08 gm. 20 mm. Syracuse mint. Struck A.D. 751-775. Constantine V (left) and Leo IV (right) facing, cross above / Leo III facing, holding cross potent. SB 1569. DOC 19. Very Fine; dark green patina. Scarce.Ex Dumbarton Oaks Byzantine Institute (tag included).