Sizes are 3" to 3.5". Most have copyright dates and these span 1976 up to 1998. The first is the earliest and was issued for "Grad Nite/Marriott's Great America." This had tiny dot dirt now removed. Second is an in-store very limited issue showing characters in center in a swirl with rim text "Wal-Mart Stores/500 Pairs Sold Club." Light oxidation on metal back but front displays Mint as do all the rest. The button showing Bugs and Michael is for the movie Space Jams with 1996 Warner Bros. copyright on the reverse. A nice group.