Well, if they take $310 million in currency out of circulation, they can mint (say) 310 million loonies without devaluing the currency. So if the metal in 100 p

Well, if they take $310 million in currency out of circulation, they can mint (say) 310 million loonies without devaluing the currency. So if the metal in 100 pennies is worth more than the metal in a loonie they make a profit.