That collect casino ashtrays... Open from 1948 to 1955 or thereabouts. I am sure there are more around, but a poll of major collectors have not found one.

MY BIG CONVENTION FIND...Frank Lonteen had a pair of dice from there he showed me...10 minutes later I found this tray...

Picture below...has an ink smear, but as rare as this is I can live with it...

Mark