It can't be from a damaged punch. The mint marks are part of the design since 1990. It is actually
Die Deterioration. The die is entering the VLDS (Very Late Die State) and is showing a breakdown on the devices on both sides. The die flow lines is an indicator of LDS. On the reverse there is evidence of die flow, machine damage and
Die Deterioration on the EPU. A is lot going on with your coin, but nothing of premium for your coin. You can save it as an educational piece or spend it.