“Junk silver” is a term used in the US, UK, Canada and Australia, to describe silver coins in fair to cull condition, which have no collectible value above their melt value of their silver content.
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This does not mean the coins aren't worth anything. These coins are often the least expensive way to add fractional silver to your holdings. An added benefit is if you ever needed to use them for barter or transactions, they are widely recognized even by those who are unaware of the silver content in them.
When purchasing these coins, keep in mind they are not pure silver, and range in purity from roughly 35-95% silver.