sd25
FCP = Fluorescent coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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SD25 - Scotland 6.5p cerulean blue, FCP/PVAD, 4mm B3 phosphor centre band (Harrison/photo) - Deegam S65.1.1 - S.G specialised XS45 - Stoneham S44 - Concise S23

4mm B3 phosphor centre band from cylinder 1 [14.1.76]