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<p>[QUOTE=&quot;Boss, post: 393860, member: 15110&quot;]Harryj,</p><p>Thanks for the reply.&nbsp; I have put on vasoline because fats or oil have covalent bonds (they have a strong attraction for each other) and chemical reactions like mosture or sulfur damage are ionic reactions (unequal charges with the stronger ions reacting with weaker ones).&nbsp; Oil based substances would repel things like water (H2O) and sulfur (oil and water don&#039;t mix, right?).&nbsp; I read this also from Q David Bowers re: conservation in &quot;Experts Guide to Collecting and Investing in Rare Coins&quot;, chapter 31 on conserving your coins.&nbsp; He referenced Neatsfoot oil or mineral oil (vasoline to my knowledge is not much different).&nbsp; However, good advice from both you and GDJMSP.&nbsp; I do keep dessicants in the Ziplock bags.&nbsp; I will isolate those two coins (they were right next to each other); remove soak in acetone and then distilled water.&nbsp; Got the idea for modern pennies to &quot;take the hit&quot; from Weimar White&#039;s book on Coin Chemistry (pg 46-47).&nbsp; He suggests using only modern untoned coins and replace as they tone.&nbsp; His arguement is convincing so I would be hard pressed to abandon at this time.&nbsp; I have never used distilled water, so I will try that and let you guys know how that works.&nbsp; I still would like to understand exactly why many people feel oil based products will harm coins (on a chemical level).&nbsp; I have put coin Care and/or vasoline on modern pennies and compared them to pennies that have nothing and put them in my kitchen.&nbsp; The oil protected the one set and the untreated pennies deteriorated over time (spots, etc).</p><p>Thanks so much for anyone&#039;s advice[/QUOTE]</p><p><br /></p>

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