This slot token matches your die that you listed yesterday. It's the Pride Of Mississippi day boat that operated out of Biloxi, MS before casinos were approved on the Mississippi Gulf Coast. It's in a plastic case, and available for sale on EBAY. Hope this helps.

Here's the link: http://www.ebay.com/itm/PRIDE-OF-MISSISSIPPI-Casino-boat-sailed-from-Biloxi-Mississippi-mid-1980s-/290992576146

Not my auction, but ends in two hours.