Image BYB ref. One Pound notes NI.601b 1 Pound 6. 5.1929Prefix N-I/B VF+ £95.00 NI.601b 1 Pound 1. 8.1929Prefix N-I/F aUNC £250.00 NI.602a 1 Pound 1. 7.1970Prefix C UNC £35.00 NI.602as 1 Pound 1. 7.1970Prefix C0000000 UNC £11.00 Specimen - Training note NI.602c 1 Pound 1. 8.1978Prefix C UNC £25.00 Five Pound notes NI.613c 5 Pounds 1.11.1943Prefix N-I/T aUNC £220.00 NI.613c 5 Pounds 1.11.1943Prefix N-I/T EF/aUNC £190.00 NI.613c 5 Pounds 1.11.1943Prefix N-I/T EF £160.00 NI.616s 5 Pounds 25.8.1988Prefix A0000000 UNC £140.00 Specimen note NI.617b 5 Pounds 1. 1.2000Prefix Y2K UNC £42.00 NI.617 are polymer notes, the last £5 notes issued by the northern Bank. Ten Pound notes NI.623g 10 Pounds 1.10.1968Prefix N-I/00 UNC £330.00 NI.624a 10 Pounds 1. 7.1970Prefix E F+/VF £55.00 NI.624a 10 Pounds 1. 7.1970Prefix E VF £50.00 Small ink annotation on the front NI.624b 10 Pounds 1.10.1971Prefix E aEF £90.00 NI.624b is a scarce variety with only 100,000 notes printed NI.624c 10 Pounds 1. 1.1975Prefix E UNC £125.00 NI.624c 10 Pounds 1. 1.1976Prefix E UNC £125.00 NI.624d 10 Pounds 1. 4.1982Prefix E aUNC £105.00 NI.624d 10 Pounds 1. 4.1982Prefix E EF £80.00 NI.624e 10 Pounds 2. 3.1987Prefix E aUNC £85.00 NI.624e 10 Pounds 2. 3.1987Prefix E EF £50.00 NI.625a 10 Pounds 24. 8.1990Prefix B aUNC £80.00 NI.625as 10 Pounds 24.8.1988Prefix B0000000 UNC £160.00 Specimen note NI.626a 10 Pounds 24 .2.1997Prefix BB VF+ £24.00 NI.629 10 Pounds 9.11.2008Prefix GG UNC £40.00 NI.629 10 Pounds 30.11.2011Prefix GH UNC £40.00 Last prefix NI.629 10 Pounds 9.11.2008Prefix YY UNC £60.00 Replacement note NI.629 10 Pounds 9.11.2008Prefix YY VF+ £28.00 Replacement note Twenty Pound notes NI.632a 20 Pounds 1. 7.1970Prefix F UNC £490.00 NI.633a 20 Pounds 24. 8.1993Prefix C aU/UNC £175.00 NI.633as 20 Pounds 24.8.1989Prefix C0000000 UNC £200.00 Specimen note NI.634a 20 Pounds 24. 2.1997Prefix CA UNC £100.00 First prefix NI.634a 20 Pounds 24. 2.1997Prefix CB VF+ £28.00 Small 2mm tear in the top margin NI.636 20 Pounds 6.11.2006Prefix HG UNC £38.00 NI.636 20 Pounds 6.11.2006Prefix HH UNC £38.00 NI.636 20 Pounds 6.11.2006Prefix YY EF/aUNC £70.00 Replacement note NI.636 20 Pounds 6.11.2006Prefix YY VF+ £50.00 Replacement note NI.637 20 Pounds 15. 4.2009Prefix HH UNC £38.00 NI.637 20 Pounds 15. 4.2009Prefix YY EF/aUNC £70.00 Replacement note NI.637 20 Pounds 12. 5.2011Prefix HJ UNC £50.00 Last prefix before Danske Bank Fifty Pound notes NI.643c 50 Pounds 1. 3.1981Prefix G VF+ £240.00 NI.646 50 Pounds 19. 1.2005Prefix YY UNC £240.00 Replacement note One Hundred Pound notes NI.651 100 Pounds 2. 6.1919Prefix No. 5840 EF/aUNC £1,800.00 NI.653a 100 Pounds 1. 7.1970Prefix H VF+ £390.00 NI.656 100 Pounds 19. 1.2005Prefix YY EF £280.00 Replacement note Northern Bank Ltd SPECIMEN SET: NI.Specimen set 5,10, 20, 50, &100 1988, 1989, 1990Prefix A, B, C, D, E. UNC £960.00 NI.616s, NI.625as, NI.633as, NI.644s & NI.654S.