This ball has been in my private collection for a while after I obtained from a trusted resource that claimed that this ball was hit (foul) by McGwire during the 1998 season and later signed. The signature is PSA certified and you can see a strong barrel marking above Big Macs signature. I do not have a letter of provenance with this. The item "Mark McGwire 1998 Game Used Signed Baseball PSA HR Record Hit By McGwire" is in sale since Thursday, October 21, 2021.
This item is in the category "Sports Mem, Cards & Fan Shop\Game Used Memorabilia\Baseball-MLB\Baseballs". The seller is "billyscards" and is located in Neenah, Wisconsin.
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