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<p>[QUOTE=&quot;Boss, post: 488256, member: 15110&quot;]I will ammend some of my above statements in that recently I have discovered that Coin Care (and probably Blue Ribbon which I just got, so for me the jury is out) leave a residue with time.&nbsp; I think because the solution is more aqueous it seems to evaporate.&nbsp; I noticed this on a few lincolns I put it on after about 6 months time.&nbsp; I would advocate mineral oil based on more reading and good preservation noticed after a couple years time (no negative changes noted).&nbsp; These are just my opinions.&nbsp; Some may argue acetone the coin and put in proper storage (which I do too) and coins will be fine.&nbsp; Which may be fine too.&nbsp; Ultimately we should all practice on worthless common, modern coins.&nbsp; We should never do anything harm to our valuable coins without proper experience.&nbsp; I scratched a VF 1915 D Lincolns with a toothpick due to inexperience.&nbsp; I now use a rosethorn with magnification and I am quite good at it.&nbsp; Totally confident I would not scratch any coin now after a lot of practice on low value coins of late.&nbsp; This of course will not remove verdigris.&nbsp; I am currently use hydrogen peroxide (a basic alkaline solution) to remove verdigris with very good results.&nbsp; I will post photos when I finish.[/QUOTE]</p><p><br /></p>

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