GC5.W7854.589b
German treatise about Bezoars (made famous these days by Harry Potter). Caught my eye as parchment reuse in a limp binding, with remains of ties.

GC5.W7854.589b upper cover

Upper Cover, with reused parchment from late medieval (gothic) latin manuscript.

GC5.W7854.589b spine

Spine, with dye or some other coloring to hide parchment – make it look more like leather?

GC5.W7854.589b lower cover

lower cover, more of the same manuscript

GC5.W7854.589b end-leaves

inside lower cover, showing the limp structure, and the verso of the same manuscript, with better preserved color in the rubricated letter