Parnassus:
Assuming one has authentication evidence, is not the same as actually having authentication evidence which has been vetted by impartial consideration or cross-examined by expertise which is skeptical of the claim. Skepticism actually, in its pure form, cuts both ways. If this supposition you pro-offered has any factual basis, it actually faces a quite rigorous and challenging authentication, and if such exists, I look forward to seeing how rigorous and scholarly that authentication is.
But since this is a "just suppose. . ." discussion, I suppose I'd want to look at the thing myself, before I'd muster up any enthusiasm for it's being anywhere near authentic.
Bill