The Hidden Meaning?

Milord, I conducted a study of the book as instructed. There were faint traces of the energy of the Empyrean upon the book, but these could very well have stemmed from the book having been aboard a space hulk and likely exposed to the Sea of Souls for some duration. Certainly there were no hidden writings or patterns that established any sort of link, no matter how small, with the Warp.

However, I found the page in question most curious. While it shows what appears to be the standard imagery of any Chapter of the Adeptus Astartes, I wonder if there is some hidden meaning. I've drawn the image below for clarity:

The symbol looks innocent enough - the golden eagle's head granted in heraldry to those who provided some service to the Immortal Emperor (praise Him!) superimposed over a white halo that is derived from several awards common within the Legiones Astartes during the Great Crusade.

If you look deeper, though, the image may have some blasphemous meaning.

The eagle's head draws the viewer's attention, implying holiness through the association of that image with the Emperor (may He rule forever). However, the design of the halo is reminiscent of heretical glyphs associated with the dark powers. The juxtaposition of the two elements draws upon similar heresies espoused during the Bollen Schism [M35] and needs no explanation.

I must concur with the Adepta Sororitas assessment that the document is a hoax and conclude that it is intended to mislead the reader into thinking that such a Chapter actually existed. I can only speculate as to who may have crafted such a ploy and for what purpose, though it seems readily apparent that these are the machinations of the servants of the Great Enemy. Who knows what calamity might befall us should this book fall into the wrong hands?

I most humbly, yet urgently, recommend that we destroy the book immediately.

Your most obedient servant,

Archivist's Note: This transcript is from a document recovered from the wreckage of Inquisitor Lerneaus' fortress after Inquisitor Lerneaus was declared Extremis Diabolus and executed by a cell of the Ordo Malleus led by Inquisitor Lord Naukara in 791.M38. The report appeared to have been deliberately damaged so as to conceal the signature and name of the author. The Insignium Astartes Anguis was not recovered and was presumed to have been destroyed, though one pict capture of a fragment remains preserved within the archives of the Order of the Sacred Oath, Convent Prioris, on Holy Terra.