Fluor shades viewed under long wave light.

OFNP = Optical free non phosphorised paper PVA = Polyvinyl alcohol acetate gum
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rw41e

Yellow fluor

RW41E - Wales 41p stone, OFNP/PVA (Cream gum), two 4mm yellow fluor bands, e(R) ellipse (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam W410.1.1 - S.G specialised XWL65 - Stoneham SLWA98 - Concise W77

Bright yellow fluor bands, cream gum, e(R) ellipse from cylinders Q1Q1, Q2Q2 [7.12.93]

RW41Ew - Wales 41p stone, OFNP/PVA (White gum), two 4mm dull yellow fluor bands, e(S) ellipse (Cyls Q1Q1, Q2Q2) (Questa/litho)

Dull yellow fluor bands, white gum, e(S) ellipse from cylinders Q1Q1, Q2Q2

Blue fluor

bw41e

BW41E - Wales 41p stone, OFNP/PVA, two 4mm blue fluor bands (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam W410.2.1 - S.G specialised XWL66 - Stoneham SLWA104

Blue fluor bands from cylinders Q1Q1, Q2Q2 [10.94] Off centre only available