A 2.1. Holes
A 2.2. Hair remains
A 2.3. Striations
A 2.4. Traces of jagged action
A 2.5. Veining, vein evidence, drainage of blood vessels
A 2.6. Variation in thickness
A 2.7. Opacity, transparency
A 2.8. Splitting
A 2.9. Variation in colour or surface appearance, matte, semi-matte, glossy
A 2.10. Presence of grain layer
The unremoved hairs the remain after the parchment is produced.
The animal’s coat along with the epidermis that may not have been removed as the result of the uneven mechanical processing of the raw skins.