Constantine V with Leo IV (751-775). AV Solidus, circa 773-775 AD. Constantinople mint. Obv. COnSTAnTInOS S LEOn O nEOS. Facing bust of Constantine V, with short beard and his son Leo IV , beardless, each wearing crown and chlamys; in field above, cross. Rev. G LEONP A MYL. Facing bust of Leo III, with short beard, wearing crown and loros and holding cross potent. D.O. 2. Sear 1551. AV. g. 4.42 mm. 19.50 About EF.