Wow, nice note!
I do how ever agree with the others statements and will also add that the brown ink used to print the large letters DEZ and the ensuing circles as well seem to some how leached towards the bottom of thee note.
Although it is not a rare or even a mint state note, no less and if I were you I would preserve it and add it to your collection. Who knows maybe your grand children or theirs will reap a future benefit from your efforts.