I just discovered a card from the Boomtown Casino Westbank in Harvey/New Orleans, LA with 4 casinos listed and Westbank in red that has Wallace Business Machines Gulfport, MS (WBM) over the mag stripe. All the originally listed white cards with the stagecoach and 4 casinos had NO manufacturer's mark. Looking at the order of cards from the other Boomtown casinos that had WBM cards this must be the very first card issued.