A great find for the serious collector of Wham-O, WFC discs or Disc history of any kind. The discs in this WFC set are white. These are some of the best throw and catch discs in the history of disc sports. It was the G-Series by Wham-O that took disc sports to a whole other level of competition. These discs were used for competitor packages for the qualified competitors in the World Frisbee Championships held at the Rose Bowl in Pasadena, California at the end of the Summer from 1976 through 1982. Qualification for individuals came from competing in one or more of the North American Series (NAS) events that were scheduled throughout the season. If you scored enough points Wham-O would send you an invitation to compete at the World Championships in Irvine, California and the finals were held at the Rose Bowl in Pasadena, CA.