Hi,
I think there are 100.000 ex of this coin. You can see it to the
MDP link.
There are no more coin for books.
I think that, when you read 3.800 ex in mintage, it's for the book mintage or for the token mintage. It's not the mintage for de 10€. In caracteristics, with the 3800 mintage, you can see NORDICGOLD / ARGENT 333/1000 in metal, so the number 3800 doesn't concern only the 10€.
On this
link, you can read a mintage of 100.000 ex but it's not the number for this coin in mini book, it's the mintage for all of the 10€ in normal quality, as
it.
You give the Vatican coins in exemplar. I have two 50 cts Vatican in coincard, these coins are protected in sealed plastic. There are in coincard. You can can take the coin in cutting the set, but here, the MDP make book with a plastic location. You can touch, take or replace the coin every time. It was the same for 10€ Petit Prince travel in 2016. It isn't a set or a coincard, it's simply a book with one of 100k of 10€ in normal quality insered just before the selling.
It's normal quality, it's not BU or BE or coincard or sealed set. No more line is necessary for this mercantil product.
Regards,
Nicolas