I think it is a print defect, but some print defects, such as the 80 Stanley, the 52 Campos, the 57 Bakep and the 58 Herrer, and even the 61 Fairly have gone for large premiums, but only after being recognized as a "variation" in a major publication, Like SCD or Beckett, or in the PSA Registry master set list. Absent that, they are just oddities collected by a few oddballs...like me