The 1991 Kayo Heavyweight Holograms Muhammad Ali The Greatest trading card is a standard-sized card made of 20 Pt. card stock. Manufactured by Kayo Boxing in the United States, this original sports trading card features a hologram design and showcases the legendary athlete Muhammad Ali. The card is part of the Heavyweight Holograms insert set for the 1991 season, making it a highly sought-after collectible for boxing fans and card collectors alike.

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