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1993 Experimental Lincoln cent?
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<p>[QUOTE="desertgem, post: 2249509, member: 15199"]Testing specific gravity/density can be done as here:</p><p><a href="http://gemologyonline.com/Forum/phpBB2/viewtopic.php?f=37&t=15506" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://gemologyonline.com/Forum/phpBB2/viewtopic.php?f=37&t=15506" rel="nofollow">http://gemologyonline.com/Forum/phpBB2/viewtopic.php?f=37&t=15506</a></p><p><br /></p><p>But if requires a good scale and a measuring set up. If it isn't a pure metal or a well known alloy, it is difficult to show anything as proof of %, but comparison with a regular cent of that year could show if it is normal metal consistency as far as %.[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 2249509, member: 15199"]Testing specific gravity/density can be done as here: [url]http://gemologyonline.com/Forum/phpBB2/viewtopic.php?f=37&t=15506[/url] But if requires a good scale and a measuring set up. If it isn't a pure metal or a well known alloy, it is difficult to show anything as proof of %, but comparison with a regular cent of that year could show if it is normal metal consistency as far as %.[/QUOTE]
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