On the Verify CGC Certification page, could it be possible to add a statement if / when a book has been Re-Holdered . One extra line or a double date for original and re-holder
Obviously a red or early blue label is a dead give away that a book hasn't been; and a new holder design means it was within past year and half,
But what about a 10- 15 year old book that was re-holdered just before the new design , It could have been as recent as 2 years ago, maybe 5, or still the original case from 13 years
( I believe the " standard " blue label came out in 2004 or '05, ) most book out there have that style label and holder,
I do check the certification when I purchase books, and if it was originally slabbed prior to 2007 ( I go by 10 years, not 7 ) I send it in for re-holder.
As time goes by, this will become a more important issue, as hundreds of thousands of books