United States 1995 - 5 Dollars Federal Reserve Note San Francisco District Insufficient Ink on Face Error (Friedberg 1985-L)
Although the PCGS label describes the note as “Underinking on Face,” the more technically precise classification per Bureau of Engraving and Printing standards is 'Insufficient Inking Error.' In such cases, the wiping cylinder or inking roller fails to properly recharge with fresh ink between sheets, leaving sections of the design starved of pigment. The engraved lines, especially in high-relief portrait zones, appear flat and lack their usual depth and sheen. Read more →