It might be a 1965 Silver Dime that has an estimated value: $9000+. You did check it out right?
Background: The official production of silver dimes were discontinued in 1964.
Beginning in 1965 dimes were made out of copper and nickel. A silver 1965 dime is a mistake (and a rare one).
Only a few have been found, but more are believed to still be in circulation or lost in a pipe somewhere.
How to spot it: The silver coin has a silver edge; the common copper/nickel coin has a strip of brown around the edge. :puffpipe: