I can see why they would have a name on the back, to prevent someone from bringing in their own card.

eBay, "Vintage 1930s Keno Game Gambling Board by Duckert Printing, New Orleans 995 996" Listed at $8 and $9 shipping, no bids. Also was listed for months, with no bids. The price dropped each time.

Another place has them, More than 10 available 14 sold, $6 or best offer, free shipping. And then a bunch that are listed for $75

Others I found, prices are all over the place, high and low.

I don't have a Worthpoint account, but they show there as well.