nd74
ACP = Advanced coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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ND74 - Northern Ireland 23p light green, ACP/PVAD (White) (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam N230.1.1 - S.G specialised XNL40 - Stoneham U69 - Concise NI56

From cylinders Q1Q1, Q2Q2 [8.11.88]