This has the story to back it up. found in a old house in the late 70's, in a wall, along with many more. BUT im wondering about authenticity and value..
It looks pretty good to me, I spent a good long time trying to authenticate one I found a while back. The ink on the signatures looks right, and the way it's cut seems good too. One tip, most of the repros tended to all have the same serial number. Do a google image search and look for your bill, if you see one with the same serial number it's a big red flag.
Great advice you've gotten here. My husband buys and sells Confederate currency and has told me serial numbers are a big key in identifying fakes as is ink color. Be careful.