I have a coin-op Tornado table from the 70's and would like to know if it is at all special, and how much is might be worth. The coin-op mechanism takes one quarter. The table has a glass playing field. The red manufacturer's plaque mounted to the table says "Tornado Incorporated" "Bob Hayes Sports-Systems, Inc., Dallas, Texas", and there is a serial number of "79 1111" stamped into the plaque. The table is in good shape and plays very fast. My guess is that this is a table from 1979. I know that Bob Hayes was a Dallas Texas tavern owner who is credited with creating Texas Style table soccer.
Any comments would be appreciated.