f17r multispectral images

[Scarecrow]

These particular lines, by the way, we cannot read with certainty in any of the three cases.

It those lines are indeed Latin, I'd expect that Kircher, Marci and/or Baresch wouldn't have had many difficulties to read them, at the time, if they were already there.
If they did, they did not leave any note about it, I believe. So potentially they are not at least Latin, nor other languages they knew.