Watch List notes:

Northern Bank Limited, specimen £20, ND (2005), serial number HE 0000000, blue and rose on multicolour underprint, H. Ferguson at right, farm tractor at lower left, reverse, Pediment of city hall, (Pick 207s, Banknote Yearbook NI.636s), red diagonal SPECIMEN overprint, uncirculated, scarce.

Estimate: £180 - £240