Tombac
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Tombac, or tombak, is a brass alloy with high copper content and 5–20% zinc content. Tin, lead or arsenic may be added for colouration. It is a cheap malleable alloy mainly used for medals, ornament,
Ottoman tombac ewer and basin set – 1870 – Collection of Turkish and Islamic Arts Museum – Brought to museum in 1926 from the tomb of Sultana Pertevniyal
A "bronze" medal (actually tombac) from the 1980 Summer Olympics
Gilding metal
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Gilding metal is a form of brass with a much higher copper content than zinc content. Exact figures range from 95% copper and 5% zinc to “8 parts copper to 1 of zinc” in British Army Dress Regulations
Tombac
…Industry uses tombac foil for heating foils and etch applications. Gilding metal is a type of tombac which is one of the most common jacketing materials for full metal and hollow-point jacketed bullets. The 1980 Olympic 'Bronze…
Raised jug, in gilding metal. Made in an English school metalwork class, 1970s–1980s