The Rise (And Fall) of the PSA 10/10 Auto 1989 Upper Deck Ken Griffey Jr Rookie Card

Chapters 00:00 - 01:14: Introduction 01:15 - 02:08: Ken Griffey Jr. Signing History 02:09 - 05:46: Sales History 05:47 - 13:23: Submissions 13:24 - 16:05: Analysis Research Google Sheets Spreadsheet of 44 of the first 46 1989 Upper Deck Ken Griffey Jr. PSA 10/DNA 10 cards: https://docs.google.com/spreadsheets/... Mill Creek Sports Website, all Ken Griffey Jr. Auto Cards: https://www.millcreeksports.com/cards... 4 Sharp Corners Website, all Ken Griffey Jr. Cards: https://4sharpcorners.com/search/sear... PSA Pop Report for 1989 Upper Deck Ken Griffey Jr. DNA Auto cards (must click PSA/DNA Certified Tab): https://www.psacard.com/pop/baseball-... PSA Certification Verification Page: https://www.psacard.com/cert Dec. 2017 article saying Griffey signed with Tri-Star: https://blowoutbuzz.wordpress.com/201... March 2018 Sports Collector’s Digest article saying Griffey no longer signs: https://sportscollectorsdigest.com/au... 2018 promo from Powers Sports Memorabilia saying this was the first time Griffey did mail order signings: https://powerssportsmemorabilia.com/b... 2018 private mail in signing:   / 1714475231991137   Tristar Private Signings for Ken Griffey Jr.: https://www.tristarproductions.com/Gr... PWCC Sales Archive of 1989 Upper Deck Ken Griffey Jr. PSA 10 auto card: https://sales-history.pwccmarketplace... January 2021 Collectors Universe Discussion Forum on first big sale, $55,000 with PWCC: https://forums.collectors.com/discuss... Detailed Explanation of the 9:10 Ratio for PSA Graded Sports Cards:    • PSA's Pop Control of the Ryan Rookie Card