Here's an interesting pin button! There's NO Sonic at all on it, which is highly unusual for non-Japanese merchandise of this time period. It features Tails who is set up to look like he's about to fight Eggman. This is before they 'westernized' him into Robotnick, which also makes it unusual. It's an interesting dynamic, with the good guy facing away from the viewer. The Sonic 2 logo appears to 1 side, but doesn't invade the design. This pin is not only unusual, it seems it's uncommon as well.