DP numbers are the copyright of the MBPC and are used with their permission.
ACP = Advanced coated paper

PVAD = Polyvinyl alcohol acetate dextrin gum

FCP = Fluorescent coated paper
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20p Black
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hd11_13
ACP/PVAD, upright print (Harrison/photo)
Normal and low OBA paper Cylinder 1A1B [10.1.90]

HD11 - 20p Black, ACP/PVAD, upright print (Cyl 1A1B) (Harrison/photo) Deegam A200.1.1 - S.G. W791 - Concise 1469 - Stoneham PB8
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HD13 - 20p Black, ACP (Low OBA)/PVAD, upright print (Cyl 1A1B) (Harrison/photo) Deegam A200.1.1a - Stoneham PB8b
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20p Black
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hd11_13
ACP/PVAD, inverted print (Harrison/photo)
Inverted print from London Life prestige panes DP146, 148 (Normal paper) - DP146A (Low OBA) [20.3.90]

HD12 - 20p Black, ACP/PVAD, inverted print (DP146, 148) (Harrison/photo) Deegam A200.1.6
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HD12a - 20p Black, ACP (Low OBA)/PVAD, inverted print (DP146A) (Harrison/photo) Deegam A200.1.6a
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20p Black
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hd14_20_21
ACP/PVAD, Imperf top, upright print, APS perforation (Harrison/photo)
DP141 [30.1.90]

HD14 - 20p Black, ACP/PVAD, Imperf top, APS perforation, upright print (DP141) (Harrison/photo) Deegam A200.1.4
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20p Black
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hd16_22_23
ACP/PVAD, Imperf bottom, upright print, APS perforation (Harrison/photo)
DP141 [30.1.90]

HD16 - 20p Black, ACP/PVAD, Imperf bottom, APS perforation, upright print (DP141) (Harrison/photo) Deegam A200.1.5
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20p Black
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hd18
ACP/PVAD, Imperf left, sideways print right, APS perforation (Harrison/photo)
DP138 [30.1.90]

HD18 - 20p Black, ACP/PVAD, Imperf left, APS perforation, sideways print right (DP138) (Harrison/photo) Deegam A200.1.2 - Stoneham PB13
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20p Black
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hd19
ACP/PVAD, Imperf right, sideways print right, APS perforation (Harrison/photo)
DP138 [30.1.90]

HD19 - 20p Black, ACP/PVAD, Imperf right, APS perforation, sideways print right (DP138) (Harrison/photo) Deegam A200.1.3 - Stoneham PB14
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20p Black
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hd14_20_21
ACP/PVAD, Imperf top, sideways print right, Comb perforation (Harrison/photo)
DP149 [17.4.90]

HD20a - 20p Black, ACP/PVAD, Imperf top, APS perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.7 - Stoneham PB9
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HD20 - 20p Black, ACP/PVAD, Imperf top, COMB perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.7a
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20p Black
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hd16_22_23
ACP/PVAD, Imperf bottom, sideways print right, Comb perforation (Harrison/photo)
DP149 [17.4.90]

HD22a - 20p Black, ACP/PVAD, Imperf bottom, APS perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.9 - Stoneham PB11
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HD22 - 20p Black, ACP/PVAD, Imperf bottom, COMB perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.9a
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20p Black
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hd24_25
ACP/PVAD, Imperf top & right, sideways print right, Comb perforation (Harrison/photo)
DP149 [17.4.90]

HD24a - 20p Black, ACP/PVAD, Imperf top & right, APS perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.8 - Stoneham PB10
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HD24 - 20p Black, ACP/PVAD, Imperf top & right, COMB perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.8a
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20p Black
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hd26_27
ACP/PVAD, Imperf bottom & right, sideways print right, Comb perforation (Harrison/photo)
DP149 [17.4.90]

HD26a - - 20p Black, ACP/PVAD, Imperf bottom & right, APS perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.10 - Stoneham PB12
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HD26 - 20p Black, ACP/PVAD, Imperf bottom & right, COMB perforation, sideways print right (DP149) (Harrison/photo) Deegam A200.1.10a
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20p Black
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hd27a
ACP/PVAD, sideways print left (Harrison/photo)
[Miniature sheet DMS1 [4.5.90]

HD27a - 20p Black, ACP/PVAD, sideways print left (DMS1 miniature sheet) (Harrison/photo) Deegam A200.1.11 - Stoneham MS6
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20p Black
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hd28
FCP/PVAD, 9.5mm A phosphor band sideways print right (Harrison/photo)
DP137 [30.1.90]

HD31 - 20p Black, FCP/PVAD, A phosphor inset band left with full band at right, both bands short at top, sideways print right (DP137) (Harrison/photo) Deegam A200.2.1
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HD32 - 20p Black, FCP/PVAD, A phosphor inset band left with full band at right, sideways print right (DP137) (Harrison/photo)
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HD33 - 20p Black, FCP/PVAD, two full A phosphor bands, sideways print right (DP137) (Harrison/photo)
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20p Black
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hd28
FCP/PVAD, 9.5mm A phosphor bands, inverted print (Harrison/photo)
Inverted print from London Life prestige panes DP147, DP147A [20.3.90]

HD29 - 20p Black, FCP/PVAD, A phosphor bands with 11mm gap between bands, inverted print (DP147A) (Harrison/photo) Deegam A200.2.2 - S.G. W792 - Concise 1470
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HD28 - 20p Black, FCP/PVAD, A phosphor bands with 10mm gap between bands, inverted print (DP147) (Harrison/photo) Deegam A200.2.2a - S.G. W792 - Concise 1470
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