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<p>[QUOTE=&quot;-jeffB, post: 3356996, member: 27832&quot;](-jeffB digs around for that &quot;thumbs-up&quot; icon)</p><p><br /></p><p>So, for [USER=33176]@Kentucky[/USER], [USER=84179]@Oldhoopster[/USER], and other chemists on the forum: what&#039;s going on here chemically? Is it an attack on the copper part of the coin, or are we really oxidizing silver to acetate with peroxide and acetic acid?</p><p><br /></p><p>For the metallurgists: is this working the same way as acid-dating nickels? I can&#039;t see any <i>other</i> way that it could.</p><p><br /></p><p>For everyone else: why aren&#039;t there a ton of acid-dated silver coins on the market, given that there are a ton of acid-dated nickels out there? This reagent is <i>less</i> hazardous than ferric chloride, although I imagine it&#039;s less shelf-stable.</p><p><br /></p><p>Edit: I&#039;ve seen one objection here (essentially, it should be easy to fake any date or any other detail via this process) -- but the same objection holds for acid-dated nickels, and even TPGs pass them as details coins.[/QUOTE]</p><p><br /></p>

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