OT: "half-dollar"/"50 cent piece" Was: Recovering the ROM of an IBM 5100 using OCR

[Nemo Nusquam]

On 06/28/19 16:54, Steven M Jones via cctalk wrote (in part):
> On 06/28/2019 11:11, Alan Perry via cctalk wrote:
>>> Canada also replaced the $1- and $2-bill with coins (26.5mm and 
>>> 28mm, resp.).
>> Oh, I know. I was questioned by the RCMP for spending a $2 bill that 
>> was in my leftover Canadian cash from a previous trip years before.
> Two weeks ago I was in London, and had brought my pound notes/coins 
> from a visit a few years earlier. When trying to buy lunch, the 
> cashier refused my £10 note since new £5 and £10 notes had been issued 
> over a year before. I was advised I could change it at a bank...
>
Then there were those huge 10-franc coins in France before the Euro, 
large enough to have writing engraved on the edge.  (I still have one or 
two somewhere....)

N.