This is a "pocketeer" wallet. It's a wallet type invented to show off. When you put it into a flat pocket (like the back of a pants) that dark blue flap with Sonic face you see there clips over the outside of the pocket so everyone can see it. There…
Here's another bank, but this one is quite tall. This Sonic has rather long legs, and crossed arms. This bank came in a box when it was new. There may have also been a bootleg of this bank produced around 2000.