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<p>[QUOTE=&quot;Conder101, post: 2519710, member: 66&quot;]It would all depend on what the exact composition of the brass is.&nbsp; For example go look at some Lincoln cents made between 1963 and 1981.&nbsp; You will see all different colors and shades of red or brown.&nbsp; All these coins are made of brass, 95% copper 5% zinc.&nbsp; As the amount of zinc in the alloy increases the likely hood of it retaining a yellow color increases.&nbsp; But to get&nbsp; true yellow brass color you have to start approaching 25% zinc.&nbsp; But ANY copper zinc alloy that doesn&#039;t contain tin is technically a brass, and brass coinage alloys come with all kinds of different compositions.</p><p><br /></p><p>Then you have to worry about cleaning.&nbsp; Cleaned copper, bronze and brass all tend to have the same appearance as well.&nbsp; So visually I consider them all to be the same composition.[/QUOTE]</p><p><br /></p>

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