The 1981A 129 Back Plate Engraving errors were printed during the months of June and July In 1985. The documented 129 back plate errors are CA, HB IA, IB and LG. The IB block is very rare with just two confirmed notes. This error was the result of the engraver placing the plate number on the left side of the note. This back plate was used in the production of notes during the months of June, July and August of 1985. Some blocks of the 1981A and 1985 series were effected..
1981A IB 129 BP Errror
1981A LG 129 BP Error