Konstantinos 120 was basilikos protospatharios and doux of Calabria; owner of a seal dateable to the ninth century: Schlumberger, Sig., p. 221, no. 7 (facsimile). Obv.: invocative monogram of Θεοτόκε βοήθει with the legend τῷ σῷ δούλῳ. Rev.: +Κω[νσ] - ταντινω β' α' σπ' (και) δουκ - . Καλαβρ. The name and titles read: Κωνσταντίνῳ βασιλικῷ πρωτοσπαθαρίῳ καὶ δουκὶ Καλαβρίας.

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