What “1st Graded” Really Means on This 1951 Bowman Willie Mays Rookie Card What “1st Graded” Really Means on This 1951 Bowman Willie Mays Rookie Card By John on August 2, 2025 This GAI-7 1951 Bowman Willie Mays rookie was labeled “1st Graded,” but that doesn’t mean what many collectors might think.
