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<p>[QUOTE=&quot;jloring, post: 1701626, member: 15518&quot;]When the nickel planchet is struck, the date (&amp; devices) are forced into the recesses of the die under great pressure. This effectively &quot;hardens&quot; those areas. When &quot;nic-a-date&quot; or other mild acid is introduced to the surface of the coin, it etches away the &quot;softer&quot; portion of the coin, revealing the hardened date. It is definitely altering the coin, but on dateless buffs it makes little or no difference. It&#039;s fun to see what dates were on those &quot;dateless&quot; coins. BTW, glad to see you back on CT, Mark.[/QUOTE]</p><p><br /></p>

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