OCPPVA - OCP/Arabic
DP numbers are the copyright of the MBPC and are used with their permission.

OCP = Original coated paper

PVA = Polyvinyl alcohol acetate gum

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OG12 or OG12r - 2p Green, OCP/Arabic, two 4.75mm screen 150 B3 phosphor bands (G1, G2 coils) (Harrison/photo) - S.G specialised U77 - Stoneham M49
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OG12 Sideways print left from G1, G2 multivalue coils [15.2.71] - Deegam 20.1.1
OG12r Sideways print right - Deegam 20.1.2

OC31 - 2p Green, OCP/PVA, two 4.75mm screen 250 B3 phosphor bands, upright print (Harrison/photo) - Deegam 20.2.1 - S.G specialised U76 - Stoneham M56 - Concise X849
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Two 4.75mm B3 phosphor bands from sheets cylinder 4 [15.2.71] - Cylinder 5 [?.3.71]

OC31t - 2p Green, OCP/PVA, two 4.75mm screen 250 B3 phosphor bands plus two black vertical bars training stamp
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Two 4.75mm B3 phosphor bands plus two black vertical bars training stamp from sheets cylinder 4 [15.2.71]

OC33 or OC33b - 2p Green, OCP/PVA, two 4.75mm screen 150 B3 phosphor bands, low set value (DP1, 11) (Harrison/photo)
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OC33 Sideways print left from booklet panes DP1 [15.2.71] - DP11 [14.7.71] - Deegam 20.3.1
OC33b Sideways print right - Deegam 20.3.2

OC34 or OC35 - 2p Green, OCP/PVA, two 4.75mm screen 150 B3 phosphor bands, high set value (DP11) (Harrison/photo) - Deegam 20.3.3 - Stoneham M56b
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OC34 Sideways print left from booklet pane DP11 [14.7.71]
OC35 Sideways print right

OC36 - 2p Green, OCP/PVA, two 4.75mm screen 150 B3 phosphor bands, sideways print left (G3 coil) (Harrison/photo) - Deegam 20.3.4 - Stoneham M56g
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Two 4.75mm B3 phosphor bands from G3 multivalue coil [?.3.77]