1956 Topps Baseball #135 Mickey Mantle grey back signed card.  The card and autograph have been graded, authenticated, and encapsulated by PSA as Authentic with an Autograph grade of 10.  The autograph is clear and bold in black across Mantle's neck and shoulders.  The card itself is clean with white borders and smooth edges.  It has been trimmed and is missing its entire left border.  Its reverse is defect free.