1952 Topps Look 'N See #90 Benedict Arnold PSA 8 to PSA 9
Sold on 4/3/2017 as a PSA 8 by eBay seller triplesssinc to whitman111 (Gary Moser) for $52
Consigned to PWCC and sold on 3/27/2018 as a PSA 9 for $3,050
Value gain of $2,998!
This Benedict Arnold shows how a single grade jump can be worth thousands of dollars to the expert trimmer. This card in a PSA 9 did not exist before Moser destroyed a PSA 8 to create one. He trimmed the left border and I believe the right border to "fix" the centering, which was the card's only discernible flaw.
To prove these are the same card, I highlighted the two common print marks in purple. The green rectangle shows the drastic left border cut. The yellow arrows show the cut pattern of the top and bottom borders, which are identical. I've also included a detail of the bottom edge so you can see the pattern is exactly the same from PSA 8 to PSA 9. The cards are the same.
PSA 8:
https://www.worthpoint.com/worthoped...psa-1860923421
PSA 9:
https://www.pwccmarketplace.com/items/1629886