nd87
ACP = Advanced coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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ND87 - Northern Ireland 34p slate blue, ACP/PVA (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam N340.1.1 - S.G specialised XNL60 - Stoneham U74 - Concise NI66

From cylinders Q1Q1, Q2Q2 [28.11.89]