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
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wd93

WD93 - Wales 37p red, ACP/PVAD (Questa/litho) - Deegam W370.1.1 - S.G specialised XWL62 - Stoneham WA91 - Concise W68

From sheets cylinders Q1Q1, Q2Q2 [4.12.90]

Amethyst - Stamps printed litho

bw37e

BW37E - Wales 37p amethyst, OFNP/PVA, two 4mm blue fluor bands (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam W370.2.1 - S.G specialised XWL63 - Stoneham SLWA103 - Concise W76

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

Amethyst - Stamps printed gravure

pw37e

PW37E - Wales 37p amethyst, OFNP/PVA, two 4.5mm Novaglo blue fluor bands (Cyl W1) (Walsall/gravure) - Deegam W370.3.1 - S.G specialised XW52 - Stoneham SWA108 - Concise W81

Two 4.5mm Novaglo blue fluor bands from cylinder W1 [1.7.97]
hw37e

HW37E - Wales 37p amethyst, OFNP/PVA, two 4.5mm blue fluor bands (DP255) (Harrison/gravure) - Deegam W370.4.1 - S.G specialised XW53 - Stoneham SWA111

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