Dont know about quarters but i dont think so as the us ones have copper in them and ours dont . older cdn pennies will work as the newer ones are made from a different alloy (there was a post last week about this )
The US coins do make a better pressed penny and quarter (especially the quarter). As the machines take both CDN and US coins what I did was use CDN coins to pay for the machine and US coins to be pressed.
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