Would this kind of grading company interest you?

[robw]

Someone must have mentioned something like this method before? I’ve always thought there should be a way the TPGs could detect resubmissions with proprietary invisible ink. Wouldn’t help a brand new submission, but would seemingly be a deterrent from resubmission. I thought this is done for some autographs.

Leads to another question...if this method was used on a card, would a collector downgrade the card as being altered or “marked?”

[Mark17]

Originally Posted by robw

Someone must have mentioned something like this method before? I’ve always thought there should be a way the TPGs could detect resubmissions with proprietary invisible ink. Wouldn’t help a brand new submission, but would seemingly be a deterrent from resubmission. I thought this is done for some autographs.

Leads to another question...if this method was used on a card, would a collector downgrade the card as being altered or “marked?”

I would not want any substance added to my vintage cards.

Blowout seems to do a pretty good job identifying cards by natural fiber patterns on the back of cards, sort of like facial recognition techniques. So I don't think anything would need to be added in a lot of cases.

[steve B]

Originally Posted by robw

Someone must have mentioned something like this method before? I’ve always thought there should be a way the TPGs could detect resubmissions with proprietary invisible ink. Wouldn’t help a brand new submission, but would seemingly be a deterrent from resubmission. I thought this is done for some autographs.

Leads to another question...if this method was used on a card, would a collector downgrade the card as being altered or “marked?”

I would.