So if there's only one in the Pop Report that has sold at auction, can the OP show a screen capture that this new grade actually happened?
Other possibility is that the one that sold was cracked and the flip was sent back to PSA for pop report removal, but surely someone would have recorded a pack break of 1952 Topps on youtube... right?
Here's a pack opening of a GAI 6.5.
https://www.youtube.com/watch?v=SQpdIwvB1f0