Junk silver bags are considered to be fractional silver bullion. They provide an easy way to add multiple ounces of silver to any investor's collection. Unlike other silver U.S. coins for sale, junk silver coins don't include any additional refining or minting fees. Commonly referred to as "junk silver coins," this name developed in the 1970s and is used to describe average circulated U.S. silver coins, meaning no rare coins are included.