I'm with John1, that's not it. There are several dies and die stages that offer many markers but you should not even worry about those until you find the variety. When you do find it, there will be no second guessing it though.
1988 P https://doubleddie.com/278722.html
1988 D https://doubleddie.com/278743.html
1988 P https://doubleddie.com/278722.html
1988 D https://doubleddie.com/278743.html
-makecents-
























