Old style slot/candy/gum machines numbers can either be machine numbers or the owners number. Hole means they are good for replay only and no additional pay outs of gum or candy. 1920's to 1940's Thyere are hunderd of thousands of them still out there. Numbers range from 0 to 35,000 and higher. Also used with the trade simulators. Found generally in the bargain bins or .50 to a $1.00