Alexius I, AE17 Tetarteron, 1081-1118 AD, Constantinople mint. Obv: IC-XC to left and right of Christ, nimbate, seated facing, holding book of gospels Rev: ALEZIW DECP, Alexius, crowned, wearing jewelled chlamys, bust facing, holding cross-headed sceptre and cross on globe. SB 1922, BMC 41 Contributed by Simon of the Forum Ancient Coins, May, 2011