I am not convinced by the provenance history of the VMS

[JustAnotherTheory]

This is also what caught my interest in the beginning, that the surviving early correspondence involving Baresch, Marci, and Kircher does not exploit a (what should be) obvious Tepenecz signature on the manuscript.

These people were experts of their time. Yet nobody mentions Tepenecz as owner or seems to investigate it further.

Maybe because... it wasn't there at that time?