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<p>[QUOTE=&quot;Dafydd, post: 2978230, member: 86815&quot;]This is something that has been perplexing me recently and I was going to raise this soon but lordmorcovan beat me to it. I have been buying coins from a large collection that was put together over 45 years. The coins range from virtually unidentifiable coins that were bought for cents 40 years ago to some rare and exceptional coins that sadly included some fakes that the forum has put me straight on.</p><p>As the fakes are identified most are returned to dealers but in some cases the dealers are no longer around but fortunately the collector has morals and these won&#039;t surface again. The collection is&nbsp; now being appraised by a major auction house so my involvement is no more.&nbsp; There are thousands of coins and peppered through the collection are dozens of coins with such dimples. I have no problem with wear, damage or irregular flans or offset strikes as these are part of the coins history but these dimples looked too precise to me and given my experience with the fakes I decided to leave any of these well alone. At one time I even wondered if these were a mark from high pressure die casting but I didn&#039;t hold this opinion for long when I could see that the value of the coins would not justify expensive tooling.</p><p>The comforting aspect of this thread to me is that these marks are quite contemporary and not potentially nefarious. Can someone explain about centration and why the dimples are there? As an engineer I can make some guesses but I am sure that someone can explain precisely.[/QUOTE]</p><p><br /></p>

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