You see these acid dipped coins popping up on CT quite frequently. Most are quarters as seen in this thread: http://www.cointalk.com/t195608/
Acid bath. But this is sure to spark another debate with some claiming this is some rare and valuable error.
I think I smell something worse than a rotten apple . Numismat what type acid do you use to dissolve the copper without dissolving the copper nickel clad layers. If you will tell me I will make us some of these ? Edited
that's the only thing I was curious of, what kind of acid would be able to solely focus on only the copper without affecting the rest of the clad???
hey I bet Numismat will tell us , he or mostlikely she is a old PRO and knows it all when it comes to coins.
one chemical that will do the job is Ferric Chloride. It will eat the copper at a much faster rate than the nickel. It is the active ingredient in Nic-a-Date.
Ziggy is correct. I have used it many times to etch the excess copper off of printed circuit boards. And it is the Nic-a-Date ingredient last I analyzed it. Jim
Acid does not dissolve copper and nickel at the same rate. Acid dissolves soft copper faster than hard nickel. If you immerse a clad coin in acid long enough you will find that the copper core has dissolved noticeably more than the copper-nickel clad layers. That is what happened to this dime.
Ok, Last warning to those who continue to insist on flaming each other, especially mentioning the name in the post. This is more than childish, and both sides are at fault. It is swell to write that one is an adult....So practice it. If you find that you can't turn the other cheek, report it. If it is a violation ( our decision, not yours ) action/infractions will be given. And don't give me " He started it" crud. I could care even less, if you don't like me or other mods, I didn't take this job to be popular ( I already was ), I take it very serious. Jim
