Constantine V Copronymus with Leo IV (741-775). AV Tremissis, Syracuse mint. Obv. [CONST.] Facing crowned and draped bust of Constantine, holding cross potent and akakia. Rev. oN LEON PAM. Facing crowned and draped bust of Leo III, holding globus cruciger and akakia. D.O. 17; Sear 1567. 1.18 g. 14.50 mm. R. Rare. Sharply struck, from fresh dies and superb. About EF.