18th IFT (1975)—Yellow—Professional Frisbee—Stroh's IFT LabelMaker: Wham-O Model: Pro Model Style: Mold: 15 Mold Size: Disc Color: Yellow Lettering/Hot Stamp: Professional Frisbee; double band—Red Label/Sticker: Stroh's, IFT International Frisbee Tournament—Red on Gold Foil sticker Date Introduced: 1975 Number Produced: Period of Manufacture: 1975 Special Notes: Stroh's beer was a sponsor. Contributor(s): Phil Kennedy