Message:

<p>[QUOTE=&quot;Leadfoot, post: 592052, member: 2972&quot;]A few points worth considering...</p><p><br /></p><p>I think the results are pleasing but would like to see some super high-resolution before and after photos before commenting further.</p><p><br /></p><p>Always happy to see these experiments on common, inexpensive coins rather than more esoteric/older pieces.</p><p><br /></p><p>The OP has just found out why rose thorns have been used by copper enthusiasts for a long time -- if done carefully the result is removal of only the verdigris and far less risky than removal by (more costly, less time-tested, and potentially problematic) chemical means.</p><p><br /></p><p>Dipping copper in solvents <b><i>(edited: like xylene or methyl ethyl ketone or acetone)</i></b> can and does remove some of the protective oils that are present on circulated copper.&nbsp; Care should be taken that the coin&#039;s surfaces don&#039;t become reactive again by a solvent dip.&nbsp; Many copper collectors would lightly brush and oil the coin to protect it&#039;s surfaces. </p><p><br /></p><p>The OP should keep a close eye on the coin over the next few months/years as the coin can (and likely will) change as a result of the removal of these protective oils.&nbsp; Also check for reformation of the verdigris/corrosion as it has a penchant for reappearing over time even if stored in pristine conditions.</p><p><br /></p><p>All of the above IMHO and based on my experience....Mike[/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