SEDiMENT IN THE PAPER STOCK
 

Do you think a card with a "bubble" in the stock should get a (PD) qualifier?

If yes, should this have its own qualifier for a stock flaw or lump it into (PD)? ...which is really for Print.

My argument would be that it is a shame to have a Mint looking card get
a PSA 6 or 7 because of a factory stock imperfection that can sometimes
only be seen on an angle.

Interested to hear what the community has to say...

I don't feel a PD qualifier would be necessary, but I wouldn't be opposed to a new "SB" qualifier for "surface bubble" since they are usually impossible to see in a scan. I don't feel a bubble should knock a card down 2 grades like a typical qualifier, either.

If I were in charge of grading at PSA my rules of thumb for this type of flaw would be:

1) no card with a surface bubble should get a MINT 9 or GEM MINT 10 grade.

2) a card with a surface bubble should get just a one grade reduction. So if a card would normally grade a 9, the surface bubble knocks it down to an 8.

You can still get a straight 9 with the stock bubbles you are referring to and you should be able to in my opinion.