Question from the Daily Mail "Answers to Correspondents" section today:
"Just before decimalisation, what was the oldest coin that was still legal tender?"
I thought it ought to be easy and jumped straight to the first milled coins of Charles II and even Oliver Cromwell, but then I began to wonder if the hammered coins from earlier would still have been legal tender, no matter how unlikely that someone would have tried to use them as such? And then one could get drawn into the debate of the interpretation of "legal tender" - we have the daft situation now where the £5 coins are legal tender, but not even the banks have to accept them...