This is a particularly ugly specimen that’s poorly photographed, but what caught my eye was the evidence of failure of the reverse die: notice the large crack and crater in relief above the exergue line and to the left of the twin. Cracked dies are useful for two purposes: (1) they suggest something of the intensity of the minting operation, that production was valued over aesthetic considerations; and (2) they can help with the sequencing of a die study.
Notice also that some one has gouged the front of the coin, likely to check for plating.
Liv Mariah Yarrow 