Miles J F T Anaheim 1976 Concert Wine Glass Unique Rare

I have a wine glass that really has me baffled. I have tried to figure out the cursive 3 letters under the "Miles" and I believe it is J.F.T. . I believe this may be a item from all the music concerts done in 1976 in Anaheim California. If anyone knows more I am definitely up to hearing it. If not that is ok, and I am offering this up for sale for a very fair price I feel. It is clearly marked "Miles Anaheim 1976". It stands 5 1/4 inches tall. The inside diameter opening across the top is 2 inches in diameter. It is in excellent condition with no chips or cracks. If you have any questions please ask.