Explanatory notes
… on base metal (whether or not plated with precious metal), ivory, wood, plastics, etc. It includes pearls or … for weighing apparatus; agate thread spinning guides; decorative corks with heads of agate, etc.; agate burnishing … leather, paper, etc.; agate rings for fishing rods, paper-knives, ink-stands, paperweights, ashtrays (e.g., of agate …