sw9_10
PCP = Phosphor coated paper PVA = Polyvinyl alcohol acetate gum
ACP = Advanced coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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SW9 - Scotland 16p Pale mushroom, PCP/PVAD (Waddington/litho) - Deegtam S160.1.1 - S.G specialised XSL15 - Stoneham SC62 - Concise S42

From cylinders 1A1B, 2A2B, 3A3B, 5A4B [27.4.83]

SW10 - Scotland 16p Pale mushroom, ACP/PVAD (Waddington/litho) - Deegtam S160.2.1 - Stoneham SC72

From cylinders 4A4B, 5A4B [2.11.83]