After the Civil War ended, the once-again unified American currency included $1, $2, $5, $10, $20, $50 and $100 bills. Higher denomination bills ($500, $1,000, $5,000, and $10,000) referred to as "United States Notes" were released in 1878. "Silver Certificates" were issued beginning in 1880, which were redeemable at the United States Treasury for the same amount of silver.