1973 Topps Willie Mays card number 305A 1973 Topps Willie Mays card number 305 has a book value of about $40.00 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.