I have several 1964 Kennedy 1/2 dollars that appear to have accented hair. Most of them are D mint. Are the accented hair errors the same for a coin with no mint mark as it is with a D mint mark. In addition, do both coins need to have the other errors to be considered a high valuable coin, and does it mean if a coin apparently has the accented hair without the other errors. I also took a magnified picture of a 1964-D showing a full head of hair. Does magnifying the coin to show more hair effect the value and do coin graders magnify coins to look at the hair? I have a picture of the coin with all the hair if you want to see it. If so, please let me know how to send it to you.