Not backdoored. They were sold to another company from CE's vault when they shut down. I have many of the cards that were supposed to be SN'd. All of the cards that went into retail repacks did not have SN's. They were supposed to be replacement cards for damaged ones and the SN would have been stamped at the time to match the damaged card. So there are a lot more than 500 copies of each of those cards on the market now. This is the case for many Collector's Edge SN'd inserts and parallels in all years. I have some from 1998 to 2000 of different products.
NO PWE's EVER!!! PLZ PM me 1st before sending any offer. ONLY selling cards as of March 2024. No trades or purchases right now.
_______________________________________________________________________
Largest total PC card collections by Team, then Athlete (as of 3/22/24):
STL Cardinals (MLB) - 8810; Carolina Panthers - 2888; GB Packers - 1790+ cards
Mark Martin (NASCAR) - 2038 cards; Jimmie Johnson (NASCAR) - 1875 cards; Jeff Gordon (NASCAR) - 1594; Ricky Rudd (NASCAR) - 839; Ozzie Smith (MLB) - 707