The Nigerian Security Printing and Minting Plc (NSPM) has assured Nigerians that the new Naira notes in circulation are of the highest quality as the old notes but pointed out that the new notes leave traces of an Intaglio ink when rubbed on plain white surfaces.
Intaglio ink is part of the components used in the minting of the notes. There have been massive criticisms of the new Naira notes, particularly the inks that bleed quickly when the notes fall in water or are rubbed on white surfaces.