I am in a bit of disagreement with RegularJoe regarding the Confederate bill. If it isn't authentic, then yes, $10 seems like a high estimate. However, if the bill is genuine you are looking at a much higher price tag in my opinion. Bills during the Confederacy didn't sore as high as $1k, but bonds did. I have never seen a bill like yours, but I only collected coins, not paper money so I am not expert. My best guesses are as follows: a.) I am missing something/don't know what I'm talking about b.) the bill is not authentic or c.) the bill is authentic and worth $50-$100. As for condition, it isn't in pristine condition, but I have seen bills sell for a lot more in worse condition then yours.
Why do you say $10 on a really good day, RegularJoe? Do you think the bill is a forgery? It's entirely possibly, but most I've seen say "copy" at the bottom, unless it was ententionally made to fool.