I have a Four Dollar Bill it has on the bill what looks like No 562 or 542, dated mFeb 1, 1864 it also has the word copy on it. The paper does seem to be different than regular paper. I can send photos if you need them.
Thanks
Jim

Come back and "answer" your own question, and there is the optoin to add photos here.

I saw a few on eBay with bidding around 20 dollars , if it is real