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<p>[QUOTE=&quot;phankins11, post: 2128449, member: 70703&quot;]A) Yup, any grandpa, grandma, mom or dad, son or daughter (if you have kids) will quite readily agree that you know exactly what you&#039;re talking about....SMH B) there is no one here who *JUST* posts on message boards. Part of the reason you (and others like you) get so much flack here, is because the serious numismatists that are members here, and other forums, want to make sure that new collectors don&#039;t come here and read a ridiculous conversation like this and walk away thinking that every coin they find with some anomaly is a rare and valuable find.</p><p><br /></p><p>&nbsp;Challenge accepted!</p><p><br /></p><p>My&nbsp; Hypothesis: Your coin was squeezed in a vice, rotated after each squeezed, 5 times to give it 10 sides. Next, because squeezing the coin like that in a vice causes the coin to warp in an vertical direction relational to the orientation of the coin in the vice, it was laid on a flat hard surface and likely hammered with a rubber mallet (or something softer than the coin metal) to flatten the coin back out.</p><p><br /></p><p><br /></p><p>For all those who don&#039;t like the idea of an innocent coin being harmed, turn your head now.</p><p><br /></p><p>So in about 45 seconds today, I was able to do this using the process I described above with a vice and rubber mallet. Imagine what I could do with more time. I&#039;m 100% sure that after a try or two more (at the cost of $1) I cold duplicate your &quot;error&quot; exactly, but I&#039;ve already spent 50 cents too much.</p><p><br /></p><p>[ATTACH=full]404844[/ATTACH]</p><p><br /></p><p>[ATTACH=full]404845[/ATTACH]</p><p><br /></p><p>To address the idea of your half being minted on the foreign planchet from Australia...</p><p><br /></p><p>I have 5 of these Australian coins and here&#039;s how its 100% impossible for your Kennedy half you have to have been minted on one of these planchets.</p><p><br /></p><p>First, your Kennedy half weighs around 11.3 grams (give or take for acceptable tolerances), while the Australian half dollar weighs in at 15.55 grams (again give or take for acceptable tolerances).</p><p><br /></p><p>[ATTACH=full]404849[/ATTACH]</p><p><br /></p><p><br /></p><p>Strike 1!</p><p><br /></p><p>Next if you study the size of the two coins, one on top of the other, You will see that the Kennedy half dollar is smaller in diameter than the the Aussie half. Which makes sense because the Aussie half is 31.51 mm and the Kennedy half is 31 millimeters. Along with the Kennedy half being squeezed in a vice, makes the whole thing visibly smaller in diameter. My picture below shows this. The Aussie half on the bottom Kennedy half on top.</p><p><br /></p><p>[ATTACH=full]404848[/ATTACH]</p><p><br /></p><p><br /></p><p>Strike 2!</p><p><br /></p><p><br /></p><p>Next lets talk about metal composition. While both halves are, indeed, made from copper and nickel, you can see from the side profile pics that they are very different coins when it comes how that composition is constructed. The Aussie half is a solid alloy of 75% copper and 25% nickel, there is no cladding. They mix the metals together roll them out into a big sheet and start punching blanks. The Kennedy half, however, is a clad coin. The coin has a 100% copper core which is sandwiched (bonded) between two layers of a copper and nickel alloy. This is a much more difficult piece of metal to produce and is, for the most part, unique to modern U.S. coinage. So if you look at my pics below you will see that the Aussie half on bottom has a solid gray silver edge while the Kennedy half has three very obviously visible layers to the coin.</p><p><br /></p><p>[ATTACH=full]404847[/ATTACH]</p><p><br /></p><p>Steeeeeeee-rike 3.... and you&#039;re out!</p><p><br /></p><p><br /></p><p>Your coin was NOT minted on an Australian planchet (or any other foreign planchet for that matter) It was squeezed in a vice and hammered out to be flat after being squeezed.[/QUOTE]</p><p><br /></p>

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