1964 NY World's Fair Mint Set question
 

I went to a flea market and purchased a 1964 World's Fair U.S. Mint Set. The 5 coins (Penny, Quarter, Nickel, Dime and JFK half) are contained in a hard plastic flip open case. An orange colored box contains the set. The box reads: "Coins of the World by U.S. Coin Corp. New York World's Fair 1964-1965 Hall of Education." Does anyone know any information about this coin set, such as mintage numbers? I know the 90% silver content and general coin information, but I'm too young to to know the history or information on this coin set. I've exhausted quite a bit of time attempting to find anything online from Google searches to Ebay searches and more, but I just can't find anything. If anyone knows anything or any resources to check out, I would greatly appreciate it. Thanks for your time.