The Bd Strikes Back - Coin Community Forum

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Author	Replies: 7 / Views: 1,394
chrsmat71 Pillar of the Community United States 4981 Posts	Posted 03/24/2014 6:23 pm AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAG! i purchased this coin last year, and it had a few spot of BD on the obverse and reverse. well, I i picked off the BD, soaked in distilled water, dried it in the oven, then waxed it. here what it looked like then. you can see the corrosion of the patina here at 2 oclock where the BD was... here's the reverse, notice the weak area around the bulls privates parts and mid section, it was there as well... well, it's back on the reverse in the same spot.. my question is...what should I do? and how is the bd growing under the wax? where the heck is the moisture coming from...or did I not get all the acids off before? the coin is waxed like I said, so..how should I remove the wax? reheat and scrub again? the pick it, soak it DW, and try again? i'd appreciate any insight you all may have. Edited by chrsmat71 03/24/2014 6:24 pm Report this Post to the Staff

echizento Moderator United States 23731 Posts	Posted 03/24/2014 6:30 pm When you heated the coin if you left it out in the air when it cooled it drew some of the moisture into the coin from the air. Try some acetone to remove the wax, heat the coin and clean of the BD and let the coin cool under an air tight jar so no moisture gets in. You can than rewax it. Report this Post to the Staff
awallin01 Valued Member United Kingdom 477 Posts	Posted 03/24/2014 6:35 pm To get rid of it again, you'll have to do the process again I guess. How is it being stored? If it was stored in a relatively sealed environment, with no exposure to the elements-it may be a form of bacterium that has built a resistance to these particular cleaning and conditions. I just found this link, may be of use for yourself :). http://www.bitsofhistory.com/info/b...disease.html Edited by awallin01 03/24/2014 6:38 pm Report this Post to the Staff
Ben Pillar of the Community United Kingdom 4208 Posts	Posted 03/24/2014 6:58 pm The waxes used for this stuff usually contain something which wont dissolve in Acetone. One way is to acid it off, another is to burn it off. But acetone probably wont work. If you use a pin, you can work it off of the afflicted area. Blitzkrieg the coin and make sure the treatment is thorough - I treat until there is no green spot after a week, and then move to a new pot and continue treatment for 2 weeks afterwards. Report this Post to the Staff
echizento Moderator United States 23731 Posts	Posted 03/24/2014 7:13 pm If you heat the coin first and than wipe with acetone it will indeed remove the wax, you may have to do it a few times. You can also try finger nail polish remover, it's a form of acetone which will also remove any enamel type of waxes. In any event it wouldn't effect the patina. Report this Post to the Staff
chrsmat71 Pillar of the Community United States 4981 Posts	Posted 03/24/2014 8:00 pm ok guys, thanks for the input...i'll keep you posted. Report this Post to the Staff
chrsmat71 Pillar of the Community United States 4981 Posts	Posted 04/03/2014 8:12 pm ok, here's an update. I removed the wax with boiling water and a bit of scrubbing. picked at the BD with a needle/toothpick until none visible. gave it an overnight in some baking soda solution. let it set for several days in distilled water, then baked. soaked it Verdi-care for about an hour, blotted excess fluid then let air dry. here it is now... Verdi-care came recommended by several sources so I thought I would give it a try. Note that the visible bd was gone when I used it, I'm just want to try and keep it from returning yet again. from the looks of the coin (weak spots in patina), I'm not the first owner to combat this problem. also, the verdi-care does add somewhat of a "shine" to the coin (compare to first pics). I kind of like it, some people may not. Edited by chrsmat71 04/03/2014 8:17 pm Report this Post to the Staff
echizento Moderator United States 23731 Posts	Posted 04/03/2014 8:39 pm Looks like you got rid of the BD. Good job. Report this Post to the Staff
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