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<p>[QUOTE="kanga, post: 506108, member: 9270"]Three of them look fine to me, but one worries me.</p><p> </p><p>The '42-P nickels looks like it was cleaned.</p><p>See the lines running almost horizontally across the reverve.</p><p>Since they are not only in the fields but also go across the devices, that suggests cleaning to me.</p><p>If it were the fields only then it wouldn't bother me (die polishing).</p><p> </p><p>The '44 WL should get an acetone bath just in case the fingerprint is still active.</p><p>Soak for a couple minutes. <u>No rubbing</u>.</p><p>Rinse in distilled water several times. <u>Pat dry</u> with a cotton towel.</p><p>This won't remove the fingerprint, but it will remove the organic acids that caused it so that it won't continue working.</p><p>Then you'll be okay.[/QUOTE]</p><p><br /></p>
[QUOTE="kanga, post: 506108, member: 9270"]Three of them look fine to me, but one worries me. The '42-P nickels looks like it was cleaned. See the lines running almost horizontally across the reverve. Since they are not only in the fields but also go across the devices, that suggests cleaning to me. If it were the fields only then it wouldn't bother me (die polishing). The '44 WL should get an acetone bath just in case the fingerprint is still active. Soak for a couple minutes. [U]No rubbing[/U]. Rinse in distilled water several times. [U]Pat dry[/U] with a cotton towel. This won't remove the fingerprint, but it will remove the organic acids that caused it so that it won't continue working. Then you'll be okay.[/QUOTE]
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