Books for sale with vellum pages

Anyone know if there is any site that sells very 1200's or 1400s leather bound books with vellum pages. My fiancee used to work with historical manuscripts and loved the feel and smell of the vellum paper. I was hoping to be able to find a copy of something I could gift her for a special occasion.

Or if anyone has an idea of what else might be suitable, I'm open to suggestions!