Raised Lines Connecting The Date In A 1966 Liberty Quarter

Note how the lines flow behind the digits? That is a die scratch. The dies are the opposite of a coin. What is raised on a coin is incuse in the die. Bust/devices/design are all incuse into the die. The fields on the die are the outside part of the die. While polishing a die die scratches can be left on the fields. (Does not affect the devices as they are incuse on the die) Sometimes the die is damaged during handling of the dies and can be scratched/gouged/dented. These will appear on the field ares and appear to flow behind the devices, like on your coin. An incuse mark on the die will appear as a raised area on a coin. Thus why die cracks are raised. (Die crack leaves a small void) Cuds are raised highest. (When part of the breaks off, then that leaves a raised area on the coin. Die chips are part of another area raised on a coin. (Another case of a break off of the die) Hope this helps.