sd36
FCP = Fluorescent coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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SD36 - Scotland 10.5p Greyish blue, FCP/PVAD, two 4.75mm B3 phosphor bands (Cyl 1) (Harrison/photo) - Deegam S105.1.1 - S.G specialised XS54 - Stoneham S51 - Concise S31

Two 4.75mm B3 phosphor bands from cylinder 1 [18.1.78]