The 1990-P Kennedy Half Dollar is fairly common in circulated grades up to about MS65 condition. In MS66 it becomes a little scarcer but can be easily pulled from Uncirculated rolls or Mint Sets. In MS67 condition it is a lot more difficult to find and finding one in this condition would be very tough, even in Uncirculated rolls or Mint Sets. Many examples in MS67 have already been graded and these go for a significant premium. There are no examples known in higher condition than MS67.