electrotypes
... that some important "bronzes" aren't bronze at all, but copper electrotypes?
... that some important "<a href="./Bronze_sculpture" id="mwDFo" rel="mw:WikiLink" title="Bronze sculpture">bronzes</a>" <i id="mwDFs">(example pictured)</i> aren't bronze at all, but copper <b id="mwDFw"><a href="./Electrotyping" id="mwDF0" rel="mw:WikiLink" title="Electrotyping">electrotypes</a></b>?