Was such direct evidence lost, or did it never exist in the first place?
Encouraging information has been passed to me by Lee Covino.
The secret knowledge of the Dark Star appears to be widespread within esoteric literature, as I have discovered over the last few years.
It often takes the form of an anomalous symbol connected with 7 stars, and featured as a counterpart to the Sun and Moon , for we find in platonic circles the concept of the existence of two suns, one being the normal astronomical sun and the other being a so-called "hypercosmic" sun located beyond the sphere of the fixed stars."; There dwells the true god and his consort. The symbol was thereafter adopted by all the peoples of the ancient world and evolved to the ubiquitous emblem of the Winged Disc.
This representation is crucial for an understanding of the cult of the Coricancha and, thus in Tawantinsuyu as a whole." "As to the disk itself, Pachacuti describes it thus: “Dicen que fue imagen del Hacedor del verdadero sol, del sol llamado Viracochan pachayachachiy”—“They say that it was the image of the Creator of the true sun, of the sun called Viracochan pachayachachiy.” Does the elliptical disc that was the centre-point of the Inca religion point to a quite different 'true sun'?There was little reason to doubt the reality of an all-important solar cult in Tawantinsuyu [The Incan Empire].