Mannheim gold : A kind of brass made in imitation of gold. It contains eighty per cent of copper and twenty of zinc.

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Taxonomy
gold, Mannheim, zinc, copper, Similor, recipes, tin, henley, encyclopedias, Mosaic Gold, formulas, processes, proportions, Imitation Gold, metals, the crucible, dictionary, education.

Defination from the web:
Mannheim gold is composed of copper, zinc, and tin, in proportions about as follows: I II Copper. ... One variety of Mannheim gold, so called, contains 1.40 parts of brass (composition 3 Cu21 Zn) to 10 of copper and 0.1 of zinc. Mosaic Gold ...