Fluor shades viewed under long wave light.
DP numbers are the copyright of the MBPC and are used with their permission.

ACP = Advanced coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
OFNP = Optical free non phosphorised paper PVA = Polyvinyl alcohol acetate gum
!

Stamps printed Litho

nd88

ND88 - Northern Ireland 37p red, ACP/PVAD (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam N370.1.1 - S.G specialised XNL61 - Stoneham U84 - Concise NI67

From sheets cylinders Q1Q1, Q2Q2 [4.12.90]
bn37e

BN37E - Northern Ireland 37p amethyst, OFNP/PVA, two 4mm blue fluor bands (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam N370.2.1 - S.G specialised XNL62 - Stoneham SLU98 - Concise NI75

Two 4mm blue fluor bands from cylinders Q1Q1, Q2Q2 [23.7.96]

Stamps printed Gravure

pn37e

PN37E - Northern Ireland 37p amethyst, OFNP/PVA, two 4.5mm Novaglo blue fluor bands (Cyl W1) (Walsall/gravure) - Deegam N370.3.1 - S.G specialised XN51 - Stoneham SLU104 - Concise NI82

Two 4.5mm Novaglo blue fluor bands from cylinder W1 [1.7.97]
hn37e

HN37E - Northern Ireland 37p amethyst, OFNP/PVA, two 4.5mm blue fluor bands (DP255) (Harrison/gravure) - Deegam N370.4.1 - S.G specialised XN52 - Stoneham SLU110

Two 4.5mm blue fluor bands from B.B.C prestige pane DP255 [23.9.97]