wd14
FCP = Fluorescent coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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WD14 - Wales 4.5p bluish grey, FCP/PVAD, two 4.75mm B3 phosphor bands (Cyl 1) (Harrison/photo) - Deegam W45.1.1 - S.G. XW28 - Stoneham WA30 - Concise W18

Two 4.75mm B3 phosphor bands from cylinder 1 [6.11.74]