Posted 04/20/2016 8:36 pm
Some die markers can be similar. On Memorial cents, a die crack on column 1 or 12 is very common on all dies. (depending on die wear) The same events happen over and over when the die makes over a million coins. The same events happen. The same weakness breakdown because they all the have them. Locations of die cracks can help. But they must match up in direction and location to be helpful. (die cracks only get worse with continued use and previous coins may not have them. sometimes opposite dies are replaced with a different die) Die scratches can be helpful but disappear with continued use of the die. (but looking close at the devices or inside of devices don't see to flatten as fast as the ones in the open fields) So look for these scratches that can be like fingerprints to a certain die. (again they do come and go and the previous coin may not have the later die state die scratches)
