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RobThe pressing needs to be done to keep the card from curling. 2 limitations with soaking include: 1. Many cards will have a surface coating that which will dull from the water, which makes many issues like T207's unsuitable for soaking for obtaining a high grade. 2. The adhesive also needs to be removed cleanly and without stains or paper loss to get a high grade, that's even more problematic when dealing with old paper. Unlike stamps, you don't know what kind of adhesive you're dealing with.