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Ok well here is one I’ve shared in the distant past but may be of continuing interest. What date do you make out and what happened? I have my thoughts but just putting it up here:

Help would be most appreciated here. I have a nice example of a short cross penny but not sure on class or moneyer? I'm told it's a King John and moneyer is Willem on London but that reverse legend looks way off to me - think CANT is the only thing I can make out which would imply Canterbury. I also think the class is later than a King John as indicated by bust type - a class 6 Henry III I think is closest but thoughts please as really have no idea about the moneyer!