The mint is such an important part of the history of a coin that I think it deserves its own field maybe?
There is the "Mint Letter" field in the date lines, but this has limitations. Are mint images still planned? I think even a description could help (e.g. "anchor") if it's easier.
But a dedicated field for the Mint would be good to have in the date line, i think:
Even for coins with a single mint, it's cool to know where they were minted.
Best
strato