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<p>[QUOTE=&quot;GDJMSP, post: 2925625, member: 112&quot;]By all means buy the books, but while you will find it mentioned there&#039;s not really a whole lot about it in them explaining what it is, what it looks like, how it&#039;s done, how to detect it, etc etc. </p><p><br /></p><p>And while you will find an article about it here and there there&#039;s really not a lot of them either. Nor are they very in depth. I imagine to some degree at least this is done to help prevent such material being used as &quot;how to&quot; manuals.</p><p><br /></p><p>Here&#039;s the thing about puttied coins, when it is done well and fresh it is extremely difficult to detect by eye, even using a loupe. Yes it can be detected but there&#039;s not really a whole lot of people who are good at it. But with time, that&#039;s when detecting it becomes easier because as the putty dries out the color changes. And that&#039;s when puttied coins are sent back in under TPG guarantees - and they have no choice but to pay. Puttied coins are a very large part, perhaps the largest part, for the TPGs using technology to detect them - the sniffers in other words. The sniffers pick it up right away.</p><p><br /></p><p>Puttied coins have been discussed here on the forum quite a few times, and pictures have been posted as well. You can find some of those threads and posts by searching and using variations and combinations of the key words putty, puttied, coins, gold. And you can also use the Google image search function to find pictures of puttied coins as well as articles and forum posts on the subject. In other words, finding the picture provides a link to the article or post.[/QUOTE]</p><p><br /></p>

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