Constantine IX. 1042-1055 AD. Tetarteron, 4.05g. (5h). Constantinople, . Obv: +his XIS REX REGNANTInm Bust of Christ facint wearing halo with cross, raising right hand in benediction and holding Gospels in left. Rx: +CWnSTAnTnOS' LE Rm. Crowned and bearded bust of emperor facing, holding labarum and globe surmounted by cross. Berk 307. DO 6. Sear 1833. Very rare. EF.