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<p>[QUOTE=&quot;robinjojo, post: 8578516, member: 110226&quot;]Sorry about the spots.&nbsp; What are they made of?&nbsp; Clearly this is not toning.</p><p><br /></p><p>Have you heard of Sodium Thiosulphate?&nbsp; I&#039;ve used it to treat ancient coins with horn silver deposits.&nbsp; It is very effect in doing that.&nbsp; I don&#039;t know if it would be effective with milky spots.&nbsp; </p><p><br /></p><p>The process is simple:&nbsp; heat up some distilled water with some Sodium Thiosulphate (usually in the form of small tablets).&nbsp; Immerse the coin for perhaps a minute at most.&nbsp; Rise the coin with distilled water, dry carefully holding the coin is a soft cloth, and assess.&nbsp; Repeat if needed.</p><p><br /></p><p>Again, I have never tried this with a proof that has milky spots.&nbsp; There&#039;s a chance that it will have no effect.&nbsp; You might want to experiment with a low value coin with this problem first, using a low concentration and proceed from there.[/QUOTE]</p><p><br /></p>

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