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<p>[QUOTE="satootoko, post: 233297, member: 669"]There is some interesting information on Chinese fake silver coins posted <a href="http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270124491696&ssPageName=ADME:B:SS:US:1" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270124491696&ssPageName=ADME:B:SS:US:1" rel="nofollow">here</a>.</p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p>I had never checked any of my black cabinet “coins” for magnetism before reading this, but when I did, it somewhat opened my eyes.</p><p><br /></p><p>The crude ones with wide borders, incorrect calligraphy or design, etc., were not all magnetic, but the ones that looked pretty good from a distance and had to be carefully examined for casting bubbles and overall size were all magnetic. (One of those business card-type refrigerator magnets slapped on the side of your computer case makes for a handy way to check coins for magnetic properties.)</p><p><br /></p><p>Most of the time It won't be a really useful diagnostic, because the coins it reveals as fake are so underweight and/or undersize that you already know their nature before you try the magnet on them. However, if you don't have an accurate small scale, one of those magnets might help at a dealer's shop or a show. It would also be handy backup confirmation to convince that tiny minority of folks who insist that 25% underweight is “within tolerance”. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="satootoko, post: 233297, member: 669"]There is some interesting information on Chinese fake silver coins posted [URL="http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270124491696&ssPageName=ADME:B:SS:US:1"]here[/URL]. I had never checked any of my black cabinet “coins” for magnetism before reading this, but when I did, it somewhat opened my eyes. The crude ones with wide borders, incorrect calligraphy or design, etc., were not all magnetic, but the ones that looked pretty good from a distance and had to be carefully examined for casting bubbles and overall size were all magnetic. (One of those business card-type refrigerator magnets slapped on the side of your computer case makes for a handy way to check coins for magnetic properties.) Most of the time It won't be a really useful diagnostic, because the coins it reveals as fake are so underweight and/or undersize that you already know their nature before you try the magnet on them. However, if you don't have an accurate small scale, one of those magnets might help at a dealer's shop or a show. It would also be handy backup confirmation to convince that tiny minority of folks who insist that 25% underweight is “within tolerance”. :D[/QUOTE]
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One more counterfeit detection tool
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