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<p>[QUOTE=&quot;GDJMSP, post: 1326769, member: 112&quot;]I guess it depends on how you define a slab. And how you define grading. </p><p><br /></p><p>It could be argued that the GSA was the first grading company to actually put a graded coin in a sealed slab. They started doing that in Dec. of 1971. Of course the grades assigned were either Uncirculated or Circulated, but the coins were put in sealed, hard plastic holders.</p><p><br /></p><p>Then there was the Redfield holder in 1976, quickly followed by the Paramount holder in the same year.</p><p><br /></p><p>Accugrade and all of the others came after these guys.[/QUOTE]</p><p><br /></p>

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