Watch List notes:

Nigeria, Central Bank of Nigeria, set of colour trials, 15 September 1958: 5/-, dark brown on multicolour, J/1 000000; 10/-, red and black, E/1 000000; £1, blue and green, A/1 000000; £5 green and purple, A/1 000000, all stamped SPECIMEN and with 2 punch-holes through signature area (Pick 2ct/3ct/4ct/5ct), about uncirculated to uncirculated (4)

Estimate: £600-800