Great information, Steve. It seems there is a world of difference between what a TPG can detect with minimal equipment on a one minute review and what COULD be detected with sufficient time, money and training. And I would even question whether TPGs could detect a lot more than they do if they really cared to, even under present review conditions. Unless Steve corrects me, I stand by my thesis that when solvents are used to remove stains from cards, there will be detectable changes in the paper.
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My avatar is a sketch by my son who is an art school graduate. Some of his sketches and paintings are at
https://www.jamesspaethartwork.com/
He is available to do custom drawings in graphite, charcoal and other media. He also sells some of his works as note cards/greeting cards on Etsy under JamesSpaethArt.
Last edited by Peter_Spaeth; 07-09-2015 at 01:43 PM.
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