After the Bowman Co. was purchased by Topps in 1956, cards under the Bowman name were not issued again until 1989. The card you have is most likely Ken Griffey Jr.'s first Bowman card from 1989 number 220. A 1989 Bowman Ken Griffey Jr. rookie card number 220 has a book value of about $6.00 in near/mint -mint condition. Professionally graded cards will sell for more. Condition is important.
Common flaws with Baseball cards include: rounded edges, creases, off centered, and faded color. Any or all flaws will devalue the card significantly.
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