Take two half penny coins or notes to the bank and they’ll credit your account a penny. Of course, just like with the $500 or $1000 notes, you’ll be losing money on the deal.
> A mill ... is perhaps a tad outdated.
Yet you use mills every time you pay for gas. Pointless in that case? Probably. Still used all the time? Certainly.
It goes without saying that half pennies are dead. A mill seems to be from the Coinage Act of 1792, which is perhaps a tad outdated.