It's rare, but every once in a while when I order a used CD online I'll get something like this.
I don't know if I even want to commit the effort to trying to remove that cleanly.
I takes a bit of the joy out of the purchase. I know it's not the seller's fault. It's the fault of some record store employee who decided to put a sticker straight on the case back in 1992 for some reason. Maybe they had a grudge against the latest KMFDM album for going in a slightly more rock direction. Who knows, but it's still annoying me 23 years later.
The worst part is that it's only the remains of a sticker, so I can't even get any interesting information about the history of this particular copy of the CD.
Like that one time I got a Pitchshifter album, and upon examining the stickers I found that it was not in its original case, and that the new case it was occupying in fact once belonged to a Coldplay album. Kinda felt tainted after that, being tricked into touching something to do with Coldplay.