I purchased some "junk silver," which is what they call 90% silver coins from the US Mint dated 1964 and earlier. These are typically purchased solely for the silver content of the coins, but on a rare occasion, you'll get lucky. You can sometimes find coins with numismatic (collectors') value.
There were a ton of old dimes in this lot!
Here are some of the Barber dimes (they were minted the same years as Barber Quarters).
I found some Barber Quarters, which were minted from 1892-1916.
These aren't worth much of a premium due to the condition, but you don't find them in "junk" bags very often.
Some better-condition Barbers as well as a worn Seated Liberty dime.
"Seated" coins were minted from 1837 to 1891.
Now, to the gems of the bunch!
An 1888 Seated Liberty dime
This one is pretty dirty, but you can see quite a few details under the dirt that often aren't visible.
More details = better grade = higher value.
A hard-to-find 1901-S Barber Dime!
This one should easily sell for $80! Not bad considering the silver value in the coin is only $1.20.