I looked through four of my KD glass guides, none of them list a clear version of the 1964 glass. I am a serious KD glass collector and have never heard of or seen the one you have. By fate, unless it is you, there is a clear 1964 version of the glass on ebay with an opening bid request of $675.00. You may have a mini jackpot. I would love to have it. Good luck.
Happy Hunting all.
Bob Simon #435