Fluor shades viewed under long wave light.

OFNP = Optical free non phosphorised paper

LFG = Layflat gum (Blue tinted gum)

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1p Dark maroon
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hl1_1a
OFNP/LFG, 9mm blue fluor bands (Harrison/photo/EME)
Upright print, bright fluor bands from cylinder 1 (P45) - Dull fluor bands from cylinder 1 (P47) [1.4.97]

HL1 - 1p Dark maroon, OFNP/LFG, two 4.5mm bright blue fluor bands (Harrison/photo/EME) - Deegam 10.24.1 - S.G. U69B - Stoneham SM20
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HL1 - 1p OFNP/LFG, two 4.5mm bright fluor bands cylinder 1 (P45) dot block of 6
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HL1 - 1p OFNP/LFG, two 4.5mm bright fluor bands cylinder 1 (P45) dot (dot omitted) block of 6
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HL1 - 1p OFNP/LFG, two 4.5mm bright fluor bands cylinder 1 (P45) no dot block of 6
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HL1a - 1p Dark maroon, OFNP/LFG, two 4.5mm dull blue fluor bands (Harrison/photo/EME)
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HL1a - 1p OFNP/LFG, two 4.5mm dull fluor bands cylinder 1 (P47) dot block of 6
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HL1a - 1p OFNP/LFG, two 4.5mm dull fluor bands cylinder 1 (P47) no dot block of 6
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