Archie,

The Bronco Billy's choken pictured below would play in a $1 slot machine. They were the same weight, thickness and diameter as a $1 slot token. They did tend to jam up the dollar slots more than a regular token, and the cage people hated them because the enameled surfaces made them very slippery, difficult to stack when counting a cash in. But, they could indeed be played in the machines and on the tables.

Bob