December 1866 dated twenty-dollar note issued by the State of Louisiana during Reconstruction. Note is cut cancelled with slight paper loss and tape repaired - looks like the right hand side was carefully re-attached - but a rare denomination.
Louisiana was under military occupation after the Civil War and though state-issued currency was expressly forbidden under the constitution. Apparently, the legal theory was that the defeated Confederate states were not part of the Union until "reconstructed" and re-admitted as states, and thus not subject to the constitutional prohibition.