Anonymus 425 was the owner of a seal dateable to the late seventh or early eighth century; his name and perhaps titles are in the form of a cruciform monogram of uncertain interpretation; it apparently contains the following Greek characters: ο υ α ι χ θ φ κ τ ρ; Zacos and Veglery 1324. Obv.: bust of a bishop saint, with crosses to left and right. Rev. : cruciform monogram (Zacos and Veglery, monogram 627), complete but of unknown solution.

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