A sticker sheet from the time of Sonic & Knuckles. This may have been one of the last 'segasonic' branded things, as that era ended around this time. There are several interesting things going on with this sticker sheet though, see if you can spot them all. First off is the rendered / CG graphic sticker seen here in the close-up.

Is it one of the first rendered or CG Sonic heads ever done? It seems pretty likely, and it's also pretty good. You can see the polygons that make it up, but whoever did it got the face as right as was possible for the time and it looks nice. The next thing is look at Knuckles there in the largest sticker, he's actually happy! Isn't that interesting that they changed his expression. Then, the Tails round sticker has him doing a thumbs-up which...maybe is only for this sticker? The small quote toward the middle is the same one on the top of the packaging.

Using a screen-shot as a sticker was more common in these times because there was no good way to get a screen-cap for yourself since everything games-wise was always on a TV that you couldn't take a photo of. So, stickers with screencaps would be a popular or wanted item. This is an interesting sheet of stickers.