Robdon 10 Posted February 28, 2014 Evening I recently bought a few coins, there seems to be a sticky residue on the coins, what is the best way to clean this sticky residue off. Kind Regards Share this post Link to post Share on other sites
Cold Sea 9 Posted March 2, 2014 Hi Robdon, You should read The Coinoissuer Newsletter's 4th newsletter on this forum. http://forum.bidorbuy.co.za/showthread.php?t=4186 Share this post Link to post Share on other sites
Pierre_Henri 121 Posted April 5, 2014 Acetone should take it of - I know it does wonders with copper/bronze coins but are not sure about silver coins. After the acetone clears, the coin should have a whitish dull hazy appearance and then just dip it in gun oil (yes gun oil) I use Ballistol-Klever Neo-Ballistol wonder army oil I sold a SA Penny last year for R52 000 (NGC-graded) on BidorBuy that received this treatment. If NCS can do it - it should not be that difficult. Pierre Share this post Link to post Share on other sites