The HALF-PENHY which occurs at constant positions at the top and bottom halves of the sheet is characterized by the appearance of the second “N” in “PENNY” as an “H”.
An illustration of the sheet showing the positions were the “PENHY” variety occurs. In this instance the varieties are not all positioned symmetrically across the sheet. The majority of them are which seems to point out that although the operation must have occurred in two separate strikes. Inking problems may have caused the flaw occurring at other positions.