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<p>[QUOTE=&quot;saltysam-1, post: 1598127, member: 23368&quot;]Any idea why the majority of coins after the late 1950&#039;s are a MS67 grade while those before are a MS68 grade? Were new presses brought into play? Perhaps a change in stamping pressure or an increase in stamping speed? Or was this an indication of stricter grading standards from that point on?[/QUOTE]</p><p><br /></p>

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