On the SBA you can look for the 1979 near date or wide rim. Look on ebay etc for pic of what to look for. Alson on the Sac on the 2000-P you can look for the wounded eagle,pics are also avail. On the Kennedys as stated above there are some interesting errors and IMO is a very pretty coin. I have found a few missing FG initials on the reverse,some have double die ,etc. Have fun....



















