Quote:
Originally Posted by GeoPoto
Perhaps the situations are parallel, but I'm not sure the TPGs really signed up to prevent doctoring, but rather committed to standards and practices that were perceived to be adequate to do so. It seems to me now they have no choice but to explicitly prevent the doctoring of previously-graded cards. You are also right that I am assuming the technology is available to support a very effective system for preventing cracking, doctoring, and then regrading without public disclosure. Identifying raw cards that have been doctored may still be difficult.
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Hi George, this is from the main PSA webpage where they advertise that they detect trimming.
THE GRADING PROCESS
PSA authenticates both sports and non-sports trading cards across all eras.
A
series of PSA graders review your cards for authenticity. If genuine, PSA looks for evidence of doctoring, such as re-coloring or trimming.
If your cards pass these two steps, PSA grades the condition of each card on a scale of 1-10, with 10 being best.
After grading, PSA holders each card in its own tamper-evident case. A label within the case displays the card's pertinent information and unique certification number.