DP numbers are the copyright of the MBPC and are used with their permission.

ACP = Advanced coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
FCP = Fluorescent coated paper PVA = Polyvinyl alcohol acetate gum
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sq29

SQ29 - Scotland 23p Light green, ACP/PVAD (Questa/litho) - Deegam S230.1.1 - S.G specialised XSL45 - Stoneham SC99 - Concise S67

From cylinders Q1Q1, Q2Q2 [8.11.88]
sq30

SQ30 - Scotland 23p Light green, FCP/PVA, two 4.5mm SA phosphor bands (Questa/litho) - Deegam S230.2.1 - S.G specialised XSL46 - Stoneham SC83 - Concise S68

From The Scots Connection prestige booklet pane DP123 [21.3.89]