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Message:: [QUOTE="Clawcoins, post: 3149221, member: 77814"]==> <a href="https://www.cointalk.com/threads/post-your-pmd-post-mint-damage-coin.318993/page-2#post-3132617" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/threads/post-your-pmd-post-mint-damage-coin.318993/page-2#post-3132617">https://www.cointalk.com/threads/post-your-pmd-post-mint-damage-coin.318993/page-2#post-3132617</a> That "error" coin is interesting.  If I spent enough time I could probably reproduce it. <ul> <li>For instance to get one half of a penny you rub the edge on sandpaper all the way around to show the zinc.  Or if you want part of the edge remaining, then just the lower part of the edge.  This will separate and make two halves when the acid eats it away.</li> <li>To prevent the obverse from any acid etching .. just put a small amount of acid that does not cover the top; only up half the height of the cent.</li> <li>To get a zinc back to the copper you simply don't let it sit in acid for too long so that it doesn't eat away all of the zinc. And since you only put in a little, there's not enough height of acid to the cent. It bubbles, or more like fizzies so you can guesstimate it.</li> <li>The right side - it kinda does that fold thing if you touch it as it's so thin.</li> <li>The left side - I'd have to experiment .. touch it with a hot torch flame maybe?</li> </ul>[/QUOTE]