sq42
ACP = Advanced coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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SQ42 - Scotland 32p dark turquoise, ACP/PVAD (Cyls Q1Q1, Q2Q2) (Questa/litho) - Deegam S320.1.1 - S.G specialised XSL68 - Stoneham SC104 - Concise S77

From cylinders Q1Q1, Q2Q2 [8.11.88]