Stickers promoting albums that showcase no signifying identification on their covers intrigue me a bit. I’m not entirely sure why, but it may have something to do with the idea that these stickers are meant to be discarded along with the plastic factory seal on which they live. With that humble thought in mind, stickers like this, found on Tool’s 2005 vinyl release of the 2001 album, Lateralus, would, by 2015, be all but extinct from the social conscious. It’s stupid, I know, but I treat these little additives as bonus time capsules that need preserving with the same amount of care as the records themselves. Just another thing to keep, save, hoard, and appreciate, I suppose.
The Prudent Groove 
I too use to keep the odd sticker that would signify what tracks on the limited edition were rarities. A lot of imports would have the stickers on, and before the internet made it easier to find what tracks lived on what albums they were very important stickers!
I guess as a collector, nothing is off the table. I remember seeing Paul’s Boutique for the first time with and without identifying sticker… I’d like to find that sticker now. Happy Saturday, Noisynoodle!