Do they need to be spendable for their actual value? If you encourage them to hold on to them rather than spend them, American Silver Eagles (face value $1, mar

Do they need to be spendable for their actual value? If you encourage them to hold on to them rather than spend them, American Silver Eagles (face value $1, market value $30-35 depending on year) are a _very_ shiny, quite large coin to find. They are also fun to collect in multiples because when you manipulate a stack/handful of them, they make the "video game money" sound.