Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. metal
8. [metal by composition or origin]
9. nonferrous metal
10. [copper and copper alloy]
11. copper alloy

Anotations

Scope note:

An alloy of about five parts of copper with one of zinc that is used as imitation gold. It is similar to brass but contains more copper. It was invented by a London watchmaker named Christopher Pinchbeck, ca. 1740. Pinchbeck was often used in clock making and the production of inexpensive jewelry and snuffboxes, particularly by craftsmen in London.