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<p>[QUOTE=&quot;ArtDeco, post: 24905142, member: 119259&quot;]I&#039;ve had great success with Sodium Thiosulphate and warm water, you just scoop 2 teaspoons of the Thiosulphate salt crystals into a glass bowl and add warm or hot water, leave the coins in there for 30 minutes to an hour then try to rinse the coin with water at your kitchen faucet.</p><p>If only some of your deposits wash off right away, reheat the glass bowl with the solution in the microwave wave again to make it warm or hot. Place the coin back into the solution and repeat the same process again.</p><p><br /></p><p>If this process fails.</p><p>Use a bowl of warm water and dampened and softened worn end of a toothpick to gently prick at the deposits (DO NOT APPLY MUCH PRESSURE) do it softly and slowly.</p><p>Everytime you think you removed some deposits just swish the coin around in the bowl of water and try again. The longer you soak the coin in the Sodium Thiosulphate solution, the more the deposits will weaken and soften into a clay or dirt like texture.</p><p><br /></p><p>Afterwards use faucet water to flush the coin to get more deposits off.</p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p>If you still can&#039;t get the deposits off, you may soak the coin in Sodium Thiosulphate for a few days to a week. Or you may have to resort to using a weak acid like heated lemon juice/citric acid to eat away the deposits.[/QUOTE]</p><p><br /></p>

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