J59//79 varieties CSS PD89s, PD90a, PD91a, PD93a and PD95a imperforate in blocks of four (the imperforate varieties are only found on these five values) (PD93 has a gum streak)

J59//79 varieties CSS PD89s, PD90a, PD91a, PD93a and PD95a imperforate in blocks of four (the imperforate varieties are only found on these five values) (PD93 has a gum streak)