I'm inclined to think it is a reproduction because it is in excellent condition and the paper feels thin and flimsy, but I have never handled a real one in person. What is your opinion from these photos? Real or copy?
Lots of reproductions of these. Easiest way to to look and see if the ink of the signatures is live ink or photocopy.
Definitely a reproduction. Check it out for yourself - http://www.crutchwilliams.com/BogusCSA_RoTx.html
Nobody can tell you for sure from a photo, but the real ones are on thin, flimsy paper. Many of the fakes are on nice, high quality paper. Also, the 1864 issues were produced in high volume amid great inflation and a lot of them never saw circulation before the fall of the Confederacy.
From the website you provided, it appears to be this one: http://www.crutchwilliams.com/CSA/BOGUS/BN69_18262.jpg However, it doesn't have "facsimile" in the bottom left corner as indicated. With that said, the signature seems like a copy as @Randy Abercrombie suggested.
These bills were printed on rice paper.for the most part which is very thin and were signed with iron gall ink which is made from an iron powder or salt and tannic oil. That is why the originals look like the signatures are rusted and have bled through the thin paper to the back of the note
CSA Notes are printed on thin paper. Some have no ink on the back side. Nothing at all. They was because the South was broke. If this note is real, it would surprise me as I’ve never seen a CSA Note in this condition. Even the older Notes that were counterfeited had a small amount of wear if unused. This is not an expensive note and it’s a very common one. Just too nice to be the genuine thing.