<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">Prince&apos;s metal</topic></authority><related type="broader"><topic>copper alloy</topic></related><related type="broader"><topic>brass</topic></related><variant type="other"><topic>Prince Rupert&apos;s metal</topic></variant><variant type="other"><topic>Princes&apos; metal</topic></variant><variant type="other"><topic>Rupert&apos;s metal</topic></variant> <note xml:lang="en"><![CDATA[ Refers to an alloy used in the jewelry and watch trade during the 17th and 18th centuries, mostly in England; it was golden in color and was probably an alloy of copper and zinc that resembled brass. Some sources specifically describe it as a type of brass with a composition of three parts copper to one of zinc pickled in a diluted spirit of vitriol and then immersed in aquafortis before burnishing. Prince's metal was supposedly invented by Prince Rupert of the Rhine. ]]></note></mads>