belti Posted August 30, 2016 Report Share Posted August 30, 2016 Hi I recently came across some coins which were inside a Christmas card but affixed with tape to hold still. When I removed the tape to release the coins, I noticed that one side of the coins where the tape was in contact is still sticky. I was wondering what is the best method to use to remove the stickiness from the coins. These are run of the mill coins, so there is not much value in them. Thank you very much for any feedback. Quote Link to comment Share on other sites More sharing options...
Art1.2 Posted August 30, 2016 Report Share Posted August 30, 2016 It depends on the metals and rarity and condition of the coins Quote Link to comment Share on other sites More sharing options...
belti Posted August 30, 2016 Author Report Share Posted August 30, 2016 Hi Thank you very much for your reply. With regard to rarity they are common coins and they are in used condition. When it comes to the metal I am no expert in the field, but I have checked the coins on Colnect and it states that they are: 1. 70%copper/24.5%zinc and 5.5%nickel 2. 75%copper/25%nickel the others are also copper/nickel but different % than the above. Thanks Quote Link to comment Share on other sites More sharing options...
Art1.2 Posted August 30, 2016 Report Share Posted August 30, 2016 For this type of coin I would soak them in a solution of dawn dish soap. It has strong decreased properties but is quite gentle. Quote Link to comment Share on other sites More sharing options...
belti Posted August 31, 2016 Author Report Share Posted August 31, 2016 Thank you very much for your reply. I will try that on one coin only first, and if it works I will try the others. Once again thank you. Quote Link to comment Share on other sites More sharing options...
ccg Posted September 1, 2016 Report Share Posted September 1, 2016 On c/n alloys, you're probably okay with a dip in acetone if you're comfortable with something stronger. Quote Link to comment Share on other sites More sharing options...
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