Message:

<p>[QUOTE=&quot;fagaly, post: 759497, member: 22003&quot;]Speaking as a physicist with a BS in chemistry, his book is interesting, but incomplete. It was basically a compilation of a number of articles on cleaning coins and chemical interactions. </p><p>There is a lot more that could have been included. For example, how to remove solder from gold coins (hydrogen peroxide and acetic acid). What solvents can be used to clean coins without incurring the dreaded &quot;CLEANED&quot; designations. I&#039;d like to see a comparison between the no longer available (due to HCFC solvents) Blue Ribbon and replacements such as &quot;Coin Care&quot;. Also, trichlor, acetone, ethanol, methanol, ultra pure water, etc.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in