Vintage T-Shirt Forum & Community Authentication Appraisals

Not sure if this is just a one off or an actual promotional or tour item. The color is definitely one that was only used in the TEN era or earlier. I found one other example here:

http://eil.com/products/Pearl+Jam/Pearl ... 46908.html

but I'm questioning the accuracy of their description. Something? Nothing? eBay? Etsy? Any help would be greatly appreciated.