The word "EURO" and the value can be seen in tiny letters on the stripe.[32] Perforations,[28] Hold the banknote against the light. You should see perforations in the hologram which will form the € symbol. You should also see small numbers showing the value.[32] A matted surface,[28] the note paper is made out of pure cotton, which feels crisp and firm, but not limp or waxy.[30] Barcodes.[28] A serial number.[28]