Questa, Cartor Enschedé & Walsall

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_20b

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 Y1772

e(R) ellipse from booklet panes DP243, DP244 [8.7.96]
qbv20a_20c-

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

qbv20_20b

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]
qbv20a_20c-

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

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_value_setting

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 - Stoneham ECL20 - Concise Y1773

Thin P in value from Classic Albums prestige pane DP411 [7.1.10]
cl20a_value_setting

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 - Stoneham ECL20a

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

Code MPIL - Date 12

cl20_12

CL2012 - 20p light green, OFNP/PVA, two 4.5mm Novaglo blue fluor bands, code MPIL, date 12 (DP455) (Cartor/litho) - Deegam 200.20.3 - Stoneham EWGO20 - Concise U3014

Code MPIL - Date 12 from Dr Who Prestige pane (DP455) [26.3.13]

Enschedé - Two 4.5mm Novaglo blue fluor bands - Litho

e2014_14a

Code MPIL - Date 14

E2014 - 20p light green (Pale face), OFNP/PVA, two 4.75mm Novaglo blue fluor bands, code MPIL, date 14 (DP471) (Enschedé/Litho) - Deegam 200.22.1 - Stoneham EEGO20

Code MPIL, date 14 from Buckingham Palace prestige pane DP471 [15.4.14]

E2014a - 20p light green (Dark face), OFNP/PVA, two 4.75mm Novaglo blue fluor bands, code MPIL, date 14 (DP476) (Enschedé/Litho) - Deegam 200.22.1 - Stoneham EEGO20a

Code MPIL, date 14 from The Great War prestige pane DP476 [28.7.14]

Walsall - Two 4.5mm Novaglo blue fluor bands - Gravure

cg20

CG20 - 20p light green, OFNP/PVA, two 4.5mm Novaglo blue fluor bands (DP516) (Walsall/gravure) - Deegam 200.23.1

From The 50th Anniversary of the Machin definitive prestige booklet pane DP516 [5.6.17]