OCP = Original coated paper PVA = Polyvinyl alcohol acetate gum
FCP = Fluorescent coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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nd3_6

Two bands

ND3 - Northern Ireland 3p ultramarine, OCP/PVA, two 4.75mm screen 250 B3 phosphor bands (Cyl 1) (Harrison/photo) - Deegam N30.1.1 - S.G specialised XN20 - Stoneham U19 - Concise NI13

Original coated paper from cylinder 1 [7.7.71]

ND7 - Northern Ireland 3p ultramarine, FCP/PVA, two 4.75mm screen 250 B3 phosphor bands (Cyl 1) (Harrison/photo) - Deegam N30.2.1 - S.G specialised XN21 - Stoneham U23

Fluorescent coated paper, B3 phosphor from cylinder 1 [4.73]

ND6 - Northern Ireland 3p ultramarine, FCP/PVA, two 4.75mm screen 250 JET phosphor bands (Cyl 1) (Harrison/photo) - Deegam N30.2.1a - Stoneham U23a

Fluorescent coated paper, JET phosphor from cylinder 1 [7.73]
nd8_9

Centre band

ND9 - Northern Ireland 3p ultramarine, FCP/PVA, 4mm screen 150 phosphor centre band (Cyl 1) (Harrison/photo) - Deegam N30.3.1 - S.G specialised XN23 - Stoneham U24 - Concise NI14

Polyvinyl alcohol acetate gum from cylinder 1 [23.1.74]

ND8 - Northern Ireland 3p ultramarine, FCP/PVAD, 4mm screen 150 phosphor centre band (Cyl 1) (Harrison/photo) - Deegam N30.4.1 - S.G specialised XN22 - Stoneham U25

Polyvinyl alcohol acetate dextrin gum from cylinder 1 [23.1.74]