I am pleased to be able to fill in a space that was empty for a long time, both at the TCDB and here at the Herschel Hoard. This is a 2006 Playoff Absolute Memorabilia Tools of the Trade Red Spectrum card TOT-60, featuring Herschel Walker.
The card has a rainbow effect on the middle of the card front, hence the spectrum name. I had the other three red versions of Walker's Tools of the Trade cards, but have been looking for this one for a long time.
As can be seen on the card back, it is serial numbered to just 25.