1966 Topps Batman Riddler Back #12 The Clown Prince of Crime

A blue ink signature (pen autograph) runs diagonally across the front of the card — this is a surface alteration that PSA typically qualifies as 'MK' (marked) and severely limits grade, often capping numeric at 1-2 or resulting in an 'Authentic' designation rather than a numeric grade. Setting aside the signature: centering appears roughly 60/40 left-to-right and 55/45 top-to-bottom, which would otherwise be acceptable; the red corner decorative border elements show wear and the card edges appear soft/worn; corners show rounding consistent with heavy handling (VG to GOOD range). The seller claims no creases and the photo does not reveal an obvious crease, but the significant surface writing is the dominant grading defect here. Collector note: signed Batman villains cards do have a separate autograph collector market, but for PSA numeric grading purposes this card would be severely penalized.