Type C and Type D brochures

Hello,
Antoine, from France, owner of an old XJ6 Serie 1 4.2L from 73.
I also have a lot of brochures, leaflets and technical books about old Jaguars.
I have the C-Type and D-Type brochures in particular. They are originals (all indications are that they are), a friend of mine gave them to me a long time ago, he got them from his late father.
I have no use for them, I would like to part with them.
Any idea of their value?
Thank you for your help.

PS: Sorry, I use a translator.

Hello Antoine,
Could you please send me more detailed pictures ?
I could be interested.
jpuentesquesada@yahoo.es
Merci bien,
Jorge.