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<p>[QUOTE=&quot;desertgem, post: 1763176, member: 15199&quot;]Any hydrogen peroxide in the Nic-a-date formula is for foaming and cleaning purposes, not to differentially dissolve the metal. That is the ferric chloride solution ( use to be available at radio shack or places with PC board material). If you can&#039;t figure out the reaction, either buy commercial, or leave the coin alone. Any old acid will not do as well as Nic-a-date and will damage the coin much more . To me Nic-a-date is similar to AT, as the coin is chemically doctored to appear possibly more valuable with a fuzzy date and ruined surface than no date. IMO .[/QUOTE]</p><p><br /></p>

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