a macro image of the red microprint, sign, watermark on a ten euro banknote, emphasizing the advanced tamper-proof

money currency seal tamperproof hologram counterfeits authenticity watermark forgery cash banknote paper finance european europe note euro financial detail guilloche spirograph closeup reflection fluorescence fraud banknotes foil bill union fake fine lines payment magnification fifty savings 50 engravings wealth false pattern protection technology strips economic profit flat microprint value number pay