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<p>[QUOTE="Col_Fury, post: 7675370, member: 88513"]While not an expert, this period of Mexican coinage is of great interest to me. </p><p><br /></p><p>I believe the thickness "should" be 2.8 mm. I would agree the edge does look 'thick.'</p><p><br /></p><p>For those coins which I have concerns, I do one or both of the following; </p><p><br /></p><p>Specific Gravity Test</p><p><br /></p><p>XRF Scan</p><p><br /></p><p>If you have a scale that goes to .0001 specific gravity testing is fairly reliable and easy. Google the directions. </p><p><br /></p><p>If you live near a college, more likely than not you can locate someone in a chemistry, engineering, or geology lab that has a portable XRF scanner. I made friends with a professor at my local college and he will test coins a few times a year for me in exchange for six pack.[/QUOTE]</p><p><br /></p>
[QUOTE="Col_Fury, post: 7675370, member: 88513"]While not an expert, this period of Mexican coinage is of great interest to me. I believe the thickness "should" be 2.8 mm. I would agree the edge does look 'thick.' For those coins which I have concerns, I do one or both of the following; Specific Gravity Test XRF Scan If you have a scale that goes to .0001 specific gravity testing is fairly reliable and easy. Google the directions. If you live near a college, more likely than not you can locate someone in a chemistry, engineering, or geology lab that has a portable XRF scanner. I made friends with a professor at my local college and he will test coins a few times a year for me in exchange for six pack.[/QUOTE]
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