Central Bank of Nigeria, printers archival specimen complete set of series of including 5/-, 10/-, £1, £5, 15 September 1958, (Pick 2s, 3s, 4s, 5s, TBB B201s, 202s, 203s, 204s), in PMG holders, 55, 58, 55, 62 respectively, printers annotations, previously mounted (4 notes)