Anonymus 450 was a basilikos protospatharios and magistros; owner of a seal dateable to the eighth century; his name is mostly lost, but ended with the letters ος: Zacos and Veglery 2629. Obv.: cruciform monogram of Θεοτόκε βοήθει, with .. - ς. - δου - λω in the corners. Rev.: ....[λ?]ω βας. . - σπαθαρι. - και μαγις - τρω. The name and titles read: ...ῳ βασιλικῷ πρωτοσπαθαρίῳ καὶ μαγίστρῳ.

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