Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Visual Works (hierarchy name)
5. visual works (works)
6. [visual works by material or technique]
7. ceramic ware (visual works)
8. pottery (visual works)
9. [pottery by kiln, location, or style]

Anotations

Scope note:

Refers to a style of silver-gray to black Roman ware with a gloss exterior made by reduction firing. It was produced in primarily in the Augustan period in northern Gaul (presently Belgium) and distributed as far as Britain into the 1st century CE.