Briggs McKenzie 2026 Leaf Pro Set Mini Acetate 1/1 Pre Production Proof, Braves

Ultra-rare 2026 Leaf Pro Set Mini Acetate card featuring Briggs McKenzie of the Atlanta Braves. This is a one-of-one pre-production proof — an exclusive piece from the manufacturing process that never reached retail shelves. Acetate construction delivers premium clarity and a distinctive look that sets it apart from standard cardboard issues. Perfect for serious collectors seeking unique, limited-edition memorabilia with documented scarcity and authenticity.