1st coin -- grease filled die? 2nd coin--post mint damage? 3rd coin--post mint damage--pos (RPM)? oh well--- there out of order sorry BILL
#1:1997: Greased due #2: 1960 D Post mint on the 1. #3: 1973 S, (closeup) looks like it MAY be a die crack that joined the top & bottom of the S. #4: Something D (is that the same 1960 D?) if so: not sure on the MM. There is dirt there, but it COULD be an RPM, within the D to the left side.
There's a whole bunch of RPM's for 1960, heres where to check for it; http://www.coppercoins.com/lincoln/dietype.php?date=1960&die_mint=d&die_type=mm&page=0
i guess its safe to call the 1960-d an (RPM)? just have to figure out which one it is, your right, there is a ton of em. . can I get a little help figuring out which one it is? thanks BILL