The Junior Junkie just posted a 1990 Topps “Heads Up” he received featuring Ken Griffey Jr. I have a few as well, and they’re actually hanging on the wall in my basement…
That is, from left to right, Craig Biggio, Tony Gwynn, John Franco (the only Red in the set), Bo Jackson, and Junior. I also had Dennis Eckersley and Mark McGwire at one point, but they weren’t worthy of inclusion on my Wall of Awesomeness.
This was a neat little set, and I wouldn’t mind picking up a few more for my wall if I found them on the cheap at a card show. Looking at the checklist the Junkie posted, I probably also wanted Gregg Olson and Jerome Walton back in the day. But alas, I never got them.
The Writer's Journey 
I had some of those and thought they were way to big. lots of Griffey Jr collectors out there would love to have the one you have.
It looks too good on my wall to give it up!