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<p>[QUOTE=&quot;ToughCOINS, post: 8439995, member: 20480&quot;]Yes, but coins only rust if they contain iron, as with wartime steel cents.</p><p><br /></p><p>Rust is an iron-specific term, and a misnomer for corrosion of elements other than iron.&nbsp; For example, steel rusts because iron content is high, however, other metals oxidize visibly, yet do not rust . . . aluminum, tin, zinc, copper, silver, titanium, zinc, gold, etc.</p><p><br /></p><p>I find it difficult to tell from your images whether your coin exhibits copper wash from a mint process, or if it has reacted with something after it left the mint.&nbsp; In any case, because Washington Quarters are copper and nickel, your coin is not rusted.[/QUOTE]</p><p><br /></p>

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