Ken Griffey Jr. 1987 Bellingham Mariners Team Issue #3 Price Guide - Sports Card Investor
Ken Griffey Jr Price List - Supercollector Catalog
Ken Griffey Jr Price List - Supercollector Catalog
Ken Griffey Jr. 1987 Bellingham Mariners Team Issue #3 Price Guide
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Ken Griffey Jr Price List - Supercollector Catalog
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1995–2010 – SABR's Baseball Cards Research Committee