Here's the card that gained a full point.
1952 Topps - [Base] #98 - Billy Pierce [Encased]
Courtesy of COMC.com
I have now cracked about 20 cards out of other holders and have only damaged one; dropped from a 6 to a 4. I sent an email to Beckett and SGC to have the cert numbers removed from their registries. I was surprised to get a call 2 days later from Beckett to confirm what I was asking (maybe they don't get many requests) and said they'd take care of it.