If I had these notes in my collection I would keep them. Question for you, the $50 with an X on it, what signature is on the note?
If you are not sure if you want them in your collection, or need the spending cash, you could always offer the notes for sale. As Eyevet mentioned in another recent post, you could make someone’s day by offering them the note for their collection. I would be interested in the $50 radar
Cheers