The Modern Forgery Hypothesis

[ReneZ]

I have only seen: 
- "he could have acquired old parchment...."
- "he could have seen the Barschius letter"
- "he could have seen a genuine Tepenec signature"
- "he could have copied the handwriting of Marci's scribe"
This is not what I would call evidence of Voynich actually doing any of these things.

Anyway, the sort of 'evidence' you are looking for simply does not exist for the majority of old manuscripts around the world. There is no need for it to prove that any book is genuinely old.

Finally, this has to be bit of a tongue-in-cheek request.
Any such evidence will simply get the 'Barschius letter treatment', namely:

"That refers to the original book that Barschius owned, and which is now lost. The Voynich MS is a different book, which is a modern fake."

Signing off again till further notice.....