Black
DP numbers are the copyright of the MBPC and are used with their permission.
FCP = Fluorescent coated paper

PVAD (Dextrin) = Polyvinyl alcohol acetate dextrin gum

PCP = Phosphorised coated paper
ACP = Advanced coated paper
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Advanced coated paper - Perforations all round

AC106 - 20p Black, ACP/PVAD, APS perforation, upright print (Cyl 12) (Harrison/photo) - Deegam 200.8.1 - S.G specialised U268 - Stoneham M401 - Concise X960

ACP, non screened value, APS perforation, upright print from cylinder 12 [26.9.89]

AC106l - 20p Black, ACP (Low OBA)/PVAD, APS perforation, upright print (Cyl 12) (Harrison/photo) - Deegam 200.8.1a

Low OBA, non screened value, APS perforation, upright print from cylinder 12

AC111 - 20p Black, ACP/PVAD, COMB perforation, upright print (TL vertical coil) (Harrison/photo) - Deegam 200.8.4 - Stoneham M401d

COMB perforation, upright print from TL vertical coil [16.10.89]

AC109 - 20p Black, ACP/PVAD, APS perforation, sideways print right (Horizontal coil) (Harrison/photo) - Deegam 200.8.5 - Stoneham M401c

APS perforation, sideways print right from SG horizontal coil [16.10.89]

Advanced coated paper - Imperf left

AC117 - 20p Black, ACP/PVAD, non screened value, imperf left (DP133) (Harrison/photo) - Deegam 200.8.2 - S.G specialised U268 - Stoneham M402

Imperf left, non screened value from booklet pane DP133 [2.10.89]

AC117s - 20p Black, ACP/PVAD, screened value, imperf at left (DP133) (Harrison/photo) - Deegam 200.8.2a - Stoneham M402a

Imperf left, screened value from booklet pane DP133

Advanced coated paper - Imperf right

AC118 - 20p Black, ACP/PVAD, non screened value, imperf right (DP133) (Harrison/photo) - Deegam 200.8.3 - S.G specialised U268 - Stoneham M403

Imperf right, non screened value from booklet pane DP133 [2.10.89]

AC118s - 20p Black, ACP/PVAD, screened value, imperf right (DP133) (Harrison/photo) - Deegam 200.8.3a - Stoneham M403a

Imperf right, screened value from booklet pane DP133

Two 'A' phosphor bands

FD865 - 20p Black, FCP/PVAD, two 'A' phosphor bands, sideways print right (DP132) (Harrison/photo) - S.G specialised U269 - Concise X916

Two full bands, sideways print right from booklet pane DP132 [2.10.89]

FD865i - 20p Black, FCP/PVAD, 'A' phosphor inset left band and full band right (i1), sideways print right (DP132) (Harrison/photo) - Deegam 200.9.1

Inset left band and full band right (i1), sideways print right from booklet pane DP132

FD864a - 20p Black, FCP/PVAD, two 'A' phosphor bands with 11mm gap between bands, inverted print (DP147) (Harrison/photo) - Deegam 200.9.2

Two 'A' phosphor bands with 11mm gap between bands, inverted print from London Life prestige pane DP147 [20.3.90]

FD864 - 20p Black, FCP/PVAD, two 'A' phosphor bands with 10mm gap between bands, inverted print (DP147) (Harrison/photo) - Deegam 200.9.2a - Stoneham M283

Two 'A' phosphor bands with 10mm gap between bands, inverted print from DP147A