Here is a question for the paper money experts out there. I don't even know enough about these to fill a Kleenex box. Not even close.

How can one tell if real or fake ? I know a lot of fakes were made but...... This came from a good friends mom's estate all folded up. Certainly well used looking. Blank on the back side as seen in the pictures.

I put the note in the plastic sleeve to now see and take pictures of.

Help please if you know.