Could someone please confirm exactly what a " Single Coin Slot", VS. a Multi-Coin Machine may be?
I purchased this book from John Lazone for a lot of money titled "Scientific Slot Machine Principles", and in his explanation of the "Grind Play", and the "Jackpot" methods indicate ONLY use a Single Coin Macine.
I think he means only use either a quarter, dollar, nickel etc. type machine vs. a machine that gives you the option of playing what denomination you wish to play.
Can anyone provide help in defining what a SINGLE COIN MACHINE IS?