Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. document genres
7. [documents by function]
8. [identifying markings and symbols]
9. marks (identifying markings)
10. [marks by location or context]
11. watermarks

Anotations

Scope note:

Refers to watermarks that are darker than the surrounding area on the sheet. A shaded watermark is produced by a depression in the sheet mold wire; when wet pulp flows into the recesses, the design is formed as different gradations of tone. The intaglio design, as opposed to a relief design, results in a thickening of the sheet at the point of contact, creating an opaque, or "shaded," design. It is a rather rare type of watermark; it has been produced since the early 19th century.