1990 Kevin Maas Error Blank Back Promo Card – Rare Grey Yankees Baseball Card
This listing features a rare 1990 Star Co. error blank back promotional baseball card of New York Yankees superstar Kevin Maas. The card displays a unique grey background and is a must-have for any serious collector. Please examine the photos carefully to assess the card’s condition, grade, and quality. Prices are competitively set based on the card’s overall condition.
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