Byzantine Coinage, Alexius I (1081-1118), Silver Histamenon Nomisma, Thessalonica, c. 1082-92, facing bust of Christ Pantokrator, rev. standing figures of St. Demetrius, holding sword and handing patriarchal cross set on globe and two steps to Alexius, 3.29g/6h (DOC 5a; SB 1905). Very rare, very fine, toned £200-250