In your opinion, did the writing of the VM start closer to 1412 or closer to 1440?

[Mark Knowles]

Here, we just need to remember the famous 10% (it that's the right number) of manuscripts that have survived and come down to us, combined with the famous parable of the guy looking for his lost keys under a street lantern.

It's a bit of a pessimistic train of thought, but then again there are still many items that are not yet publicly available, so something may still turn up some day.

From Koen's list on his website there are many possibly relevant manuscripts that have not been digitised and so not studied by Voynich researchers. I have been contemplating whether it would be worth me putting in the time and effort to track down these and other relevant manuscripts to see if I can find better matches. This is a daunting task, so I am not sure if will explore it, but it could potentially by very useful.