Throughout history silver and gold have been used as currency. Silver, however, is cheaper than gold and can be used as a stable investment strategy especially during a financial crisis. 1,000 oz of silver are in a bar of standard silver. Roughly 900 million oz is mined annually, which comes to 75 tons a day with a value of about 44 million. Compare to that the average American household debt of $98,312, or the Federal Reserve balance sheet of $4.5 trillion. Global sovereign debt is 13 times more than that.