Found an older thread on e4: Did this defect get over looked or is it normal?
The card shown was a 4xxxxxxx cert psa 9 masaki gengar.
Owners of psa10/9 masaki sets also commented on linked thread that some of their masaki cards have the marks too.
Below is my psa 9 omastar:
So I guess it’s not uncommon for higher grade masakis to have these marks.
Maybe PSA f***ed up, but this happened too many times to be considered misgrades, unless PSA is really inconsistent in grading masakis.
Owners of masaki cards in psa 10/9/8s, free feel to provide your insight on this issue.