Constantine X, Ducas. 1059-1067. AV Histamenon. Constantinople mint. +IhS IXS REX REGNANTIhM, Christ, nimbate, seated facing on straight-backed throne, raising hand in benediction, holding Gospels / +KWN RACL' O DOVKAC, Isaac standing facing, in crown & loros, holding labarum & globus cruciger; X on labarum shaft.