25 Valuable Mark McGwire Baseball Cards including his rookie cards
MARK MCGWIRE (9) Card Rookie Lot - Oakland A's
The Most Expensive Mark McGwire Cards of All-Time
2 Mark McGwire Beckett Graded Cards - Matthew Bullock Auctioneers
1987 topps 366 Values - MAVIN
Mark McGwire 1987 Donruss Base #46 Price Guide - Sports Card Investor
Mark McGwire 1987 Topps Base #366 Price Guide - Sports Card Investor
Most Valuable Mark McGwire Cards Potential Long Term Investments
1985 Topps #401 Mark McGwire Signed Rookie Card – PSA/DNA GEM MT