Cards still being outed on Blowout -- PSA 9 Monte Irvin in the recent ML

[steve B]

Originally Posted by BobbyVCP

I think that BO is doing good job...one thing that bothers me in their pointing out cards. I was in the screen printing biz for many years. So paper printing is similar but much faster speed. Now lint and things get on the screen so they need to be wiped down. But before it gets caught there must be a lot of cards with the same error spots....not just one card. So unless they can confirm the buyer and seller are the same person to call it out.

Some are more convincing then others.

To me the most convincing are the fiber inclusions in the cardstock. Those are as good as anything as an identifier.

Print flaws are a very mixed bag.
Some are very transient. One job we had we needed to go through looking for flaws.(the booklet was being given to people pictured in it, and theirs had to be perfect. The rest were for attendees, and flaws were fine unless they were major.) most were white spots, and most only appeared on one booklet. A couple were more common. But we were a high quality usually low production shop. On cards, I've seen similar flaws that are sort of common.
Other flaws are flaws on the plate itself. Those are very consistent, and some cane be white or colored dots. If those are there and then later not there I have questions.... Tempered by the fact that some scanners can be set to automatically remove random specks, or do that by default.