Mark Armour – SABR's Baseball Cards Research Committee
Vintage mark mcgwire shirt - Gem
Joe G. (Goat Jerseys) – SABR's Baseball Cards Research Committee
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SABR's Baseball Cards Research Committee – Page 16
Mark Armour – SABR's Baseball Cards Research Committee
Lot Detail - 2016 Mark McGwire Game Used San Diego Padres Home Throwback 80th Anniversary PCL Uniform (Jersey and Pants) From 9/7/16 Vs Red Sox (MLB Authenticated)
Joe G. (Goat Jerseys) – SABR's Baseball Cards Research Committee
Oddballs – Page 5 – SABR's Baseball Cards Research Committee
2023 Spring Classic - Sports Memorabilia Auctions
2017 Bowman Baseball Checklist, Details, Team Set Info