Friends

I found this $20.00 bill strange sign. I examined it with magnifying glass. Its too crispy too be a hand placed teller error etc.
Also, there are
Bluish Hairs all over the Bill that match the color the Sign. How can that happen? That there are exact same color hair in various places of the bill.
Has someone else seen this particular sign or where it comes from?
Appreciate your help.
God Bless
Beck
I dont think its saying MB just something else....maybe?
