Konstantinos 125 was epi ton barbaron; owner of three seals dateable to the ninth or tenth century and each from a different stage of his career as epi ton barbaron, first with the dignity of basilikos spatharios, then with that of basilikos spatharokandidatos and finally with the higher dignity of basilikos protospatharios: Schlumberger, Sig., p. 451, no. 13 (facsimile) (obv.: image of a gryphon with the legend Κ(ύρι)ε [βοήθει τῷ σῷ] δούλῳ; rev.: +Κωνς - ταντίνῳ - β(ασιλικῷ) σπαθ(αρίῳ) (καὶ) ἐ - πὶ τῶν βα - ρβά[ρω]ν), p. 452, no. 15 (facsimile) (obv.: image of a barbarian with the surviving letters ...βαρ; rev.: +Κ(ύρι)ε βο[ή] - θ(ει) Κωνστα - [ν]τίν(ῳ) β(ασιλικῷ) σπα - [θ]αροκανδιδ - [άτῳ] (καὶ) ἐπὶ τῶν - [β]αρβάρ(ων)), p. 452, no. 14 (facsimile) (obv.: image of an eagle strangling a dragon; rev.: +Κονς - [τ]αντίνῳ - β(ασιλικῷ) (πρωτο)σπαθαρ - [ί]ῳ (καὶ) ἐ[π]ὶ τῶ - ν βαρβάρ - ων).

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