I'd like to open a new thread about this folio, f1v.
This folio is already known for a glyph ("G" or "3") on a green leaf, on the left side.
I'd like to show you something, on a yellow leaf, on the right side.
First of all, the folio, You are not allowed to view links.
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If we zoom in strongly, we can see clearly a glyph who looks like the number "1".
On the left of this "1", we can distinguish with difficulty another number "8".
If there are numbers, we get a "81".
And now the image of this curiosity :