The Best How To Clean Trading Cards For Grading 2022. This should create a nice brick of holders. Every crease, trace of residue, and sign of wear (or lack thereof) is scrutinized before a final grade is assigned to the card.
You can also use baby powder if you don’t have any corn flour. And the paste makes a great biscuit, too!!! Learn more about our grading process, insightful content and collecting.