Watch List notes:

(x) Norges Bank, set of four replacement 100 kr 1977, serial numbers HM/HN/HO/HS 0023852 (different prefixes, same serial numbers), red on multicolour background, value and centre, writer and feminist Camilla Collett at left, reverse floral and geometric pattern at centre, value at right,, (Pick 41a for type), All About Uncirculated with the same small counting fold at left margin, a very rare and highly unusual set of different prefixes/same serial number replacement notes. (4).

Estimate: £400 - £500