sq46
ACP = Advanced coated paper PVA = Polyvinyl alcohol acetate gum
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SQ46 - Scotland 39p amethyst, ACP/PVA, perforation 14.75 X 14 (Questa/litho) - Deegam S390.1.1 - S.G specialised XSL73 - Stoneham S93 - Concise S80

Perforation 14¾ X 14 from cylinders Q1Q1, Q2Q2, Q3Q3, Q4Q4 [3.12.91]

SQ47 - Scotland 39p amethyst, ACP/PVA, perforation 13.75 X 14 error (Questa/litho) - Deegam S390.1.2 - S.G specialised XSL74 - Stoneham S93a - Concise S80a

Perforation 13¾ X 14 error from cylinders Q1Q1, Q2Q2 [?.4.92]