Anonymus 420 was the owner of a seal dateable to the seventh century: Speck, Bleisiegel 86. Obv.: bust of a saint, possibly female, with halo and crosses on either side. Rev.: cruciform monogram of uncertain interpretation, containing the letters ε, π, ν, ο and υ, and possibly μ and others. Possible interpretations may be Epiphanios or Panaretos.

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