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<p>[QUOTE=&quot;-jeffB, post: 1600870, member: 27832&quot;]WOW.</p><p><br /></p><p>That&#039;s an amazing set, and it&#039;s very cool to realize that this metal was <i>more</i> precious than gold -- more expensive, and certainly far rarer -- at the time these patterns were minted.</p><p><br /></p><p>To address doug444&#039;s question, aluminum is an <i>extremely</i> reactive metal, and it oxidizes almost instantly on exposure to air. But the oxide coating that forms is transparent, hard, and unreactive, and protects the metal&#039;s appearance. That&#039;s why aluminum foil retains its shine for so long. As long as you don&#039;t expose the surface to acids, alkalis, or certain corrosive salts, it should retain luster for a very long time.[/QUOTE]</p><p><br /></p>

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