Northern Ireland 1981 Specimen 20 Pounds Banknote with De La Rue stamps, not a Specimen made for collectors. Only 11 of those banknotes were graded by PMG in all grades which implies the scarcity of this note. PMG Population 3/7. Specimen #038. We also have for sale 20 Pounds Specimen banknote with matching Specimen #038 number. Graded as GEM Uncirculated PMG-66EPQ with Exceptional Paper Quality.