Origin of the Shield Shape in the Solar Folio of the f85-86 Foldout

[Dobri]

Notice several cipher-like letters (enclosed in red)

Ligatures actually: "cie", "re", and a missing "h" added above the word.

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Indeed, the point here is that four centuries later, in the early 15th century, the unknown scribes likely used elements of the Beneventan script to create the cipher.