Sure mate , they mint the coins “currency ” , it costs them to produce it , the coins were made of 92.5 percent silver , the currency was being debased due to wars , incase you didn't know wars cost a mega load of money to fund , seeing as you wanna learn il go on bud, so changing out the currency for a cheaper metal, namely brass coins , average Joe's were not happy about the debasement of the currency due to this creating a weaker currency , silver being a more EXSPENSIVE monetary metal and watching the wealthy with gold didn't go down well , in short my buddy and pal - the bankers were reducing the size if the coin more and more so as to use less and less silver so as to create a cheaper wesker currency for the masses, now laughing boy give me something good 👍