"World's Fair" "Coin Slot"

[PSD]

To help with my historical record of amusement arcades and amusement machines I'm searching for old copies of the "Coin Slot" newspaper. I'm looking to buy any pre 1990 editions and there's cash waiting!
"Coin Slot" during the relevent period was one of two supplements of the "World's Fair" newspaper, the other one being "Market Trader".
Please contact me if you have any copies to sell or even if you know where I can find some. Many thanks