Pick n Pay just refused a R200 from one of my staff members and I had to go sort it out, as they kept her there.

Long story short, they called her back when she almost left the front doors and could not prove the note was received from her, as there was other R200 notes in the cash drawer as well. Also, they first said it is counterfeit, but when I questioned them on why they claim that, they changed the story to it is not counterfeit, but an old note without the diamonds printed at the bottom.

My question now is what is the situation with regards to old notes without the diamonds at the bottom?