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<p>[QUOTE=&quot;lettow, post: 1345192, member: 6986&quot;]tonedcoins:</p><p><br /></p><p>What you refer to as restoration is generally referred to on the paper side as doctoring and is not an acceptable practice.&nbsp; More importantly, even for those few who may accept the practice, the failure to disclose the alterations is the bigger sin.</p><p><br /></p><p>Your comparison to coins is misplaced.&nbsp; Note doctoring is harmful to the note itself.&nbsp; Cleaning is usually done with harsh chemicals such as bleach or mild abrasives.&nbsp; Both of these affect the integrity of the paper and weaken its bond.&nbsp; The long term effects of chemicals have yet to be seen.&nbsp; If they have penetrated the paper, there is no way to be certain they may not lead to more rapid deterioration of the paper.[/QUOTE]</p><p><br /></p>

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