These cool pogs are actually slammers. The thicker plastic (or can be metal) pogs used to hit the others. You can see the grip on the back, where it says "Wackers Smacker!" The fronts have stock art, but a special holo/foil background (as is common for slammers) They're copyright 1995,…
This is a little shot from Neko Daisuke Pet Club for GameGear. It's a pet raising game, but you can find this nice Sonic poster decorating one of the walls.