The story of the Atari bumper sticker is actually quite short. One of my co-workers left the company and another co-worker moved into his cube. As he was cleaning up the cube, he found this bumper sticker and threw it in the trash. I saw it as I was passing by and immediately rescued it. It is now proudly displayed in a poster frame in my computer room at home along with my Atari Force poster & a couple stickers announcing Pac-Man and E.T. for the 2600.
If you really must know, the little line at the bottom says:
Copyright © 1987 Atari Corporation, Sunnyvale, CA 94089