They are die chips, where part of the die has a void from the chipping off on the die. As mentioned these are just die events. Some could be caused by die clashes, or other die events, that cause the die to be damaged. So the void on the die is filled with the coins metal and will show a raised area on the coin. Knowing what it is the premium for these die events. Move on to the next coin. No premium for these die events. (All the rest of the coins struck with that die, will all have the same marks on them. (making them common)
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