Purple

OFNP = Optical free non phosphorised paper

PVA = Polyvinyl alcohol acetate gum

OFPP = Optical free phosphorised paper PVA (Blue tinted gum) = Layflat gum
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eb31

Enschedé Novaglo blue fluor bands

EB31 - 31p purple (Dark head), OFNP/PVA, two 4.75mm Novaglo blue fluor bands, upright print (Enschedé/gravure) - Deegam 310.6.1 - S.G specialised U327 - Stoneham EE31 - Concise Y1695

Deep shade (Dark head), two 4.75mm Novaglo blue fluor bands from cylinder 1 [25.6.96]

EB31s - 31p pale purple (Pale head), OFNP/PVA, two 4.75mm Novaglo blue fluor bands, upright print (Enschedé/gravure)

Pale shade (Pale head), two 4.75mm Novaglo blue fluor bands from cylinder 1

Harrison blue fluor bands

hl31

HL31 - 31p purple, OFNP/PVA (Blue tinted), two 4.5mm blue fluor bands, upright print (Harrison/gravure) - Deegam 310.7.1 - S.G specialised U328 - Stoneham SM39

Two 4.5mm blue fluor bands from cylinder 1 (P45) - Cylinder 1 (P47) [26.8.97]

De La Rue Optical free phosphorised paper

df31

DF31 - 31p purple, OFPP/PVA, upright print (Blue tinted gum) (De La Rue/gravure) - Deegam 310.8.1 - Stoneham SM62

OFPP from Stamp Show 2000 miniature sheet DFMS1 [22.5.00]