1992 Score Ken Griffey Jr. Perforated Test Print Production Proof.
Unlike a standard factory printing error, this card is a production tool. Before Score ran printing lines in 1992, press operators generated a tiny handful of test sheets. These sheets feature distinct perforations designed for quality assurance teams to tear out individual card proofs for visual and ink testing.
As a result, this piece completely lacks the standard card text, biographies, and statistics, leaving it with a 100% authentic blank back.