The real question then is who was having books of parchment made? Did the various royal and noble houses provide the materials, or just pay for them? Obviously the church would be providing its own materials.
There are 213 books in the KBR library and they come from a variety of sources. Many of the later ones were commissioned by Philip the Good. Did he provide the parchment? And there are earlier books given by Christine de Pizan. Who provided her with parchment?
Did VMs parchment come from a church related source or from commercial book production?
In my view VMs dating is not as solid as some would like it to be. Putting the four C-14 results into a single sample assumption is one way to look at the data, but it is not the only way to interpret the data. The most recent of the four results could be indicative of a second production of parchment. In which case, the finished production date for the VMs would need to be moved to the more recent dating. In addition, three potential historical markers in the VMs: (Melusine [specifically as portrayed in Harley 334 f 57, a copy of de Metz, produced in Paris in 1430-1440], the Golden Fleece (1430) and la Sainte Hostie de Dijon (1434) , *if accepted*), suggest that the earliest production date is in the mid 1430s.
There are 213 books in the KBR library and they come from a variety of sources. Many of the later ones were commissioned by Philip the Good. Did he provide the parchment? And there are earlier books given by Christine de Pizan. Who provided her with parchment?
Did VMs parchment come from a church related source or from commercial book production?
In my view VMs dating is not as solid as some would like it to be. Putting the four C-14 results into a single sample assumption is one way to look at the data, but it is not the only way to interpret the data. The most recent of the four results could be indicative of a second production of parchment. In which case, the finished production date for the VMs would need to be moved to the more recent dating. In addition, three potential historical markers in the VMs: (Melusine [specifically as portrayed in Harley 334 f 57, a copy of de Metz, produced in Paris in 1430-1440], the Golden Fleece (1430) and la Sainte Hostie de Dijon (1434) , *if accepted*), suggest that the earliest production date is in the mid 1430s.

