[split] Roots and Eagle heraldry

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In 2016, I made this comparison (the VMs, You are not allowed to view links. Register or Login to view. - to the Rylands German MS 1, You are not allowed to view links. Register or Login to view. (first half of the XV c.)):
   
This comparison was in my first, now disabled, blog. I actuallly thought I mentioned it on the forum, but looking through my attechments, I found that I didn't. My attention though was concentrated not especially on the shape of feathers, but on the general symbolism: the roots - an eagle, the two stalks - two heads, the seven crown-shaped blossoms - seven crowns.
As for the eighth blossom, I saw it like this one above the rest seven (from  BSB Cgm 598, after 1467, You are not allowed to view links. Register or Login to view.):
   
I don't understand the text, but I think the eighth crown represents all the seven crowns in one.
A page with with the image of seven crowns doesn't present in Rylands version. Dresden Ms. N. 110 (second half of the 15th Cent., 1492?) shows just seven crowns (alchemywebsite):

For the note, the later more extend versions with more images are probably copied from the Nuremberg (or Kadolzburg) version dated to 1433 (Barbara Obrist).