Watch List notes:

(x) Northern Bank Limited, a second £100 1968, prefix N-I/BB, black and white, with plough and loom at top centre, value at
centre in blue, values at left and right, reverse, blue, bank initials and value, with SPECIMEN overprint in red,, (PMI NR85-86s, Pick 186s), all in PMG holders 67 EPQ superb gem unc and scarce.

Estimate: £600 - £700