Questa & Cartor
Fluor shades viewed under long wave light.
DP numbers are the copyright of the MBPC and are used with their permission.
OFNP = Optical free non phosphorised paper

PVA = Polyvinyl alcohol acetate gum

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Questa - One 4.75mm blue fluor centre band - Litho

QBV20 - 20p Light green, OFNP/PVA, 4.75mm blue fluor centre band, e(R) ellipse (DP243, 244) (Questa/litho) - Deegam 200.13.1 - S.G specialised UG51 - Stoneham EQL20 - Concise Y1751

e(R) ellipse from booklet panes DP243, DP244 [8.7.96]

QBV20a - 20p Light green, OFNP/PVA, 4.75mm blue fluor centre band, e(S) ellipse (DP243, 244) (Questa/litho)

e(S) ellipse from booklet panes DP243, DP244 [8.7.96]

Questa - One 4.75mm Novaglo blue fluor centre band - Litho

QBV20b - 20p Light green, OFNP/PVA, 4.75mm Novaglo blue fluor centre band, e(R) ellipse (DP243A, 244A) (Questa/litho) - Deegam 200.14.1 - S.G specialised UG51b

e(R) ellipse from booklet panes DP243A [21.2.97] - DP244A [23.1.97]

QBV20c - 20p Light green, OFNP/PVA, 4.75mm Novaglo blue fluor centre band, e(S) ellipse (DP243A, 244A) (Questa/litho)

e(S) ellipse from booklet panes DP243A [21.2.97] - DP244A [23.1.97]

Questa - One 4.5mm Novaglo blue fluor centre band - Gravure

QG20 - 20p Light green, OFNP/PVA, 4.5mm Novaglo blue fluor centre band, sideways print right (DP277, 278) (Questa/gravure) - Deegam 200.17.1 - S.G specialised U276 - Stoneham EQG20

Sideways print right from booklet panes DP277, DP278 [1.12.98]

Cartor - Two 4.5mm Novaglo blue fluor bands - Litho

CL20 - 20p Light green (Deep shade), OFNP/PVA, two 4.5 Novaglo blue fluor bands, thin P in value (DP411) (Cartor/litho) - Deegam 200.20.1 - S.G specialised UG52 - Concise Y1751m

Thin P in value from Classic Albums prestige booklet pane DP411 [7.1.10]

CL20a - 20p Light green (Pale shade), OFNP/PVA, two 4.5 Novaglo blue fluor bands, thick P in value (DMS28) (Cartor/litho) - Deegam 200.20.2

Thick P in value from the London 2010 Festival of Stamps Exhibition miniature sheet DMS28 [8.5.10]