Iconic Detroit Pistons caricature T-shirt from their 1989 Championship win, signed by Joe Dumars himself! Bought from the original owner who never wore it. By Salem Sportswear. This T-shirt has already sold and we do not have another at this time. All items listed in the T-shirt archives are for reference only. See any other T-shirts we may have for sale here. Have some T-shirts you'd like to sell? I am always buying! Email me and tell me about your collection.