Paper varieties viewed under long wave light.
PDP numbers are the copyright of the MBPC and are used with their permission.

BCP = Bluish coated paper PVA = Polyvinyl alcohol acetate gum
OCP = Original coated paper
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Bluish coated paper - Screen 150 phosphor bands (Head A)

P165 - 5d slate blue, BCP/PVA, two 4.75mm screen 150 phosphor bands, head A1, upright print (Cylinder 1) - Deegam PD6.1.1 - Stoneham M33 - Concise 735

Upright print from cylinder 1 [1.7.68]

Bluish coated paper - Screen 150 phosphor bands (Head B)

P177u - 5d deep dull blue, BCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, upright print (PDP8 (R2) - Deegam PD6.1.3 - Stoneham M34b

Upright print from booklet pane PDP8 (R2) [16.9.68]

P177i - 5d deep dull blue, BCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, inverted print (PDP8 (R2) - Deegam PD6.1.4 - Stoneham M34b

Inverted print from booklet pane PDP8 (R2) [16.9.68]

Original coated paper- Screen 150 phosphor bands

P175 - 5d deep blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, upright print (Vertical coil - Deegam PD6.1.2 - Stoneham M34d

Upright print from AE vertical coil [9.9.68]

Coils stamps are normally available in strips of up to 5.

P178u - 5d deep dull blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, upright print (PDP8 (R2) - Deegam PD6.1.3 - Stoneham M34b

Deep dull blue shade, upright print from booklet pane PDP8 (R2) [16.9.68]

P187u - 5d deep bright blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, upright print (PDP8 (R3) - Deegam PD 6.1.3

Deep bright blue shade, upright print from booklet pane PDP8 (R3) [1.5.69]

P178i - 5d deep dull blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, inverted print (PDP8 (R2) - Deegam PD6.1.4 - Stoneham M34b

Deep dull blue shade, inverted print from booklet pane PDP8 (R2) [16.9.68]

P187i - 5d deep bright blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, inverted print (PDP8 (R3) - Deegam PD 6.1.4

Deep bright blue shade, inverted print from booklet pane PDP8 (R3) [1.5.69]

P173 - 5d slate blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, upright print (Cyl 7) - Deegam PD 6.1.5 - Stoneham M34

Slate blue shade, upright print from cylinder 7 [3.69]

P186 - 5d deep blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, head B2, upright print (Cyl 10) - Deegam PD 6.1.6 - Stoneham M34 - Concise 735Ee

Deep blue shade, upright print from cylinder 10 [5.69]

P191 - 5d blue, OCP/PVA, two 4.75mm screen 150 phosphor bands, screened border, head B2, upright print (Cyl 15) - Deegam PD 6.1.6b

Screened border, upright print from cylinder 15 [9.4.70]
p187_p188

Original coated paper - Screen 250 phosphor bands - Head B2

P176 - 5d blue, OCP/PVA, two 4.75mm screen 250 phosphor bands, head B2, sideways print left (Horizontal coil) - Deegam PD 6.2.1 - Stoneham M34e

Sideways print left from AF horizontal coil [9.9.68]

Coils stamps are normally available in strips of up to 5.

P189 - 5d blue, OCP/PVA, two 4.75mm screen 250 phosphor bands, head B2, upright print (Cyls 11, 13) - Deegam PD 6.2.2

Upright print from cylinder 11 [4.69] - Cylinder 13 [3.12.70]

P183 - 5d blue, OCP/PVA, two 4.75mm screen 250 phosphor bands, head B2, upright print (PDP13, 15) - Deegam PD 6.2.3 - Stoneham M34f

Upright print from booklet panes PDP13, 15 [1.12.69]
phosphor_omitted

P183mp - 5d blue, OCP/PVA, phosphor omitted, head B2, upright print (PDP15) - Deegam PD 6.2.3b

Upright print, phosphor omitted from booklet pane PDP15 [1.12.69]