This article is from the Paper Money Collecting FAQ, by Bruce Giese firstname.lastname@example.org with numerous contributions by others.
This is by far the most common paper money question asked in
rec.collecting.paper-money and the answer is almost always that it's
only worth face value on the market. If the note is in absolutely
uncirculated condition, it might be worth a little bit more (ten
dollar notes can be worth many times face value in UNC condition).
There are some varieties of silver certificates from these series
that are worth a good deal of money, but nearly all of the silver
certificates which show up in circulation aren't worth much.
It might be worth something to you, and that's what really