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<p>[QUOTE=&quot;Magnus87, post: 3726826, member: 96372&quot;]Coin Nut: Yes, I have seen other posters voice the same caution but no, in my several adventures with this process, I have never had the misadventure you warn about.&nbsp; In my current ongoing job described above the IHC I’m working on has been in the soup now for over 3 months with no apparent effect on the toning other than a VERY slight overall lightening, which has left a somewhat darkish piece actually looking better!&nbsp; I guess “your mileage may vary” is true sometimes...&nbsp; And yes, gently picking away at the crud with something WAY softer than the coin as you describe would probably well serve Razz.&nbsp; I’m having to cope with much harder stuff than you &amp; Razz are.&nbsp; I learned about the oil soak from some ancients collectors; they swear by it.&nbsp; Anyhow, let’s see how it goes.[/QUOTE]</p><p><br /></p>

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