Not a real major mistake just made me take a much closer look at the coin. I purchased this proof 1964 Kennedy and as I do with all my slabs, I like to look up the slab serial number. They have it listed as an accented hair variety, which it is not. Probably just hit the wrong link when adding it to their database.
Meh, take it out of the slab, do a little tooling work on the hair, lop off the serif on the "I", and call it a day.