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<p>[QUOTE="hotwheelsearl, post: 3795212, member: 75143"]<a href="https://www.cointalk.com/threads/an-illustrated-guide-to-vinegar-dating.285108/" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/threads/an-illustrated-guide-to-vinegar-dating.285108/">https://www.cointalk.com/threads/an-illustrated-guide-to-vinegar-dating.285108/</a></p><p><br /></p><p>Please see my very detailed guide on vinegar dating.</p><p><br /></p><p>The reason this works is because <i>I believe</i> pressure stress on the nickel-copper alloy means that the metal with retain the density difference, even under the surface. A weak acid will eat away the surface at a uniform rate per unit density. Since the density of the date and the surroundings are not the same, the less dense areas will be eaten away first, leaving the more dense (aka dated) areas to be eaten away later.</p><p><br /></p><p>I have sold some Buffalos usually worh $25+ in the $5-8 range. Vinegar dating brings the saleable value of the coins to LESS THAN POOR.</p><p><br /></p><p>So, not a great option, but if you have somethiing with <i>absolutely no date</i> then you really can't hurt it. Worst case scenario you have a nickel worth $0.05. Best case scenario you have a key date worth $8.[/QUOTE]</p><p><br /></p>
[QUOTE="hotwheelsearl, post: 3795212, member: 75143"][URL]https://www.cointalk.com/threads/an-illustrated-guide-to-vinegar-dating.285108/[/URL] Please see my very detailed guide on vinegar dating. The reason this works is because [I]I believe[/I] pressure stress on the nickel-copper alloy means that the metal with retain the density difference, even under the surface. A weak acid will eat away the surface at a uniform rate per unit density. Since the density of the date and the surroundings are not the same, the less dense areas will be eaten away first, leaving the more dense (aka dated) areas to be eaten away later. I have sold some Buffalos usually worh $25+ in the $5-8 range. Vinegar dating brings the saleable value of the coins to LESS THAN POOR. So, not a great option, but if you have somethiing with [I]absolutely no date[/I] then you really can't hurt it. Worst case scenario you have a nickel worth $0.05. Best case scenario you have a key date worth $8.[/QUOTE]
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