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<p>[QUOTE=&quot;desertgem, post: 1497776, member: 15199&quot;]If it is the same diameter and width as the other, I think it is a bubble in the planchet core before striking. The other alternative is to look carefully on the edge for a filled hole, as it might have been used as a practice piece for adding mint mark or making it appear as a repunched mm or an OMM ( making a D under the S ). But I still think the weight differential is due to metal defect, that would explain the difference in sounds also.</p><p><br /></p><p>The official weight is 3.11 grams, but can officially be as low as 2.98 grams ( 3.11 +/- 0.13 grams. If you scale only reads to tenths as indicated, it is rounding off the &quot;hundredths&quot;.it may not be as drastic as you think[/QUOTE]</p><p><br /></p>

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