D23 exclusive sticker and without:
This is the original way "Con/Event" & "Shared" Pops were released — except back then, "Shared" stickers did not exist, making the Event/Con exclusive Pop the only version with a sticker.
The "shared" versions (same pop/box), were then released as a "stickerless" event exclusive. (These pops can be confused to look like what we call today a "common".)