So I got a 1964 Kennedy half dollar because I have always wanted one and it finally arrived! But I am not sure after studiously studying this coin if there are some errors on here but I think there is some doubling on the I in liberty no mint mark (don’t know if that’s important or not) and some lamination errors on the H of half dollar so here are some pictures!
Your half dollar was minted in Philadelphia which is why there is no mint mark. The marks on the H and the I are just damage.
Not seeing any doubling and no mint mark means it was minted at Philadelphia.The H appears to have a huge gash not a lamination or errors just damage.Even in uncirculated condition 1964 jfk's are very common,not that much over melt.
You won't know if you don't ask, been there done that. A lifelong enjoyable learning experience. Good luck.